Shastihayani Dasa

Your Shastihayani periods

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Expand a period to see its subperiods. All branches start folded.

Calculated periods. Dates retain the API response’s UTC offset; end times are exclusive.
Period	Lord	Starts	Ends	Track

Request & raw JSON response

What is Shastihayani Dasa used for?

Shastihayani provides a 60-year planetary timing framework selected by a specific birth-chart condition: Sun placed in Lagna. In a traditional reading, this condition is the reason to choose this system for examining events across the person’s life. Its period dates are read together with the planets and houses in the birth chart.

Your result shows calculated time periods. Understanding what happens within a period requires the rest of the birth chart; this page does not generate a new personal prediction.

How Shastihayani Dasa is calculated

The occupied longitude group selects Jupiter, Sun, Mars, Moon, Mercury, Venus, Saturn or Rahu. The groups preserve the source boundaries, including the shortened and extended segments around Abhijit.

Follow the calculation step by step

Calculate the natal positions from the person’s birth time and place, using the selected Ayanamsa. Check applicability: Sun placed in Lagna
Opening balance = full years of the selected lord × remaining fraction of its assigned longitude group. Preserve the unequal groups, including the Abhijit boundaries; do not divide every group into an equal number of stars.
Jupiter, Sun and Mars receive ten years each; the remaining five lords receive six each. Child durations follow these weights.
For these planetary methods, proportional subdivision uses the full, untrimmed parent duration × child-lord years / cycle years. Clip the opening result at birth only after establishing the underlying boundaries. Use the documented system order: Ashtottari and Tithi Ashtottari run in reverse, while Tara’s children use Vimshottari order. Repeat only to the requested depth.
Convert the resulting year fractions to dates using the reported year convention. This system defaults to TrueSiderealSolar. A sidereal solar year measures a full sidereal revolution of the Sun; a fixed 360-day year and a mean tropical year are different clocks. Published approximate month/day arithmetic can differ from exact solar-motion boundaries.

Read each result from its inclusive start to its exclusive end. The schedule is clipped to the supported span; its length is not a prediction of lifespan. Use the live date query for fine detail and the life timeline for an overview.

History and traditional context

Chapter 14 describes a sixty-year scheme selected by the Sun in the Ascendant. Rath interprets the Sun’s governing role through an elder, father or teacher, sometimes as the organizing influence of a spiritual purpose.

When and how to use it

Verify the Sun-in-Lagna condition and examine what the Sun rules in the actual chart. Use the schedule to explore the timing of that influence together with the period lord. Preserve the unequal nakshatra groups: a generic twenty-seven-star division gives the wrong balance here.

An example from the book

Chart 42 uses Swami Vivekananda’s Moon at 17°27′ Virgo. Rath takes 19°13′ remaining in the Moon’s 53°20′ group and multiplies the fraction by six years, obtaining about 2.16187 years. This demonstrates a group balance, not a balance within Hasta alone.

Paraphrased from Sanjay Rath, Vimsottari & Udu Dasas (2005). Interpretive and biographical claims are the author’s account, not independent verification or a new prediction from this calculator.

References: Chapter 3.2; chapter 14.2–14.3, Chart 42 and Tables 51–52. Calculation implementation · Source audit and known differences.

How Shastihayani works

60-year cycleMajor periods and subperiods

Traditional applicability

Sun placed in Lagna

Your result will tell you whether this person meets the traditional selection conditions. You can still explore the periods when the conditions are not met.

Starting rule, durations and settings

Starting reference and balance

The occupied longitude group selects Jupiter, Sun, Mars, Moon, Mercury, Venus, Saturn or Rahu. The groups preserve the source boundaries, including the shortened and extended segments around Abhijit.

Lord sequence and full allotments

Lord	Full years
Jupiter	10
Sun	10
Mars	10
Moon	6
Mercury	6
Venus	6
Saturn	6
Rahu	6

Jupiter, Sun and Mars receive ten years each; the remaining five lords receive six each. Child durations follow these weights.

Calculation settings

No additional system-specific option is required for the default calculation. The response reports the convention actually used. A system’s full cycle is not a prediction of a person’s lifespan.

Use Shastihayani with an AI assistant

Connect an MCP-compatible assistant to the free public MCP endpoint https://mcp.vedastro.org/api/mcp/public. Follow the MCP connection guide, initialize the MCP session, list the available tools, and call either tool below with system: "Shastihayani".

Replace the sample with the user’s actual birth location, local birth date (DD/MM/YYYY) and time (HH:MM, 24-hour). No saved-person ID or website account is required by these tools. Never invent missing birth details. The server resolves coordinates and date-specific offsets. Inspection times are local to the birth location, not the browser timezone.

`get_dasa_at_time`

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_dasa_at_time",
    "arguments": {
      "location_name": "Bangalore, India",
      "birth_date": "16/10/1918",
      "birth_time": "14:20",
      "system": "Shastihayani",
      "check_date": "17/10/1918",
      "check_time": "12:00",
      "levels": 3
    }
  }
}

`get_dasa_for_life`

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_dasa_for_life",
    "arguments": {
      "location_name": "Bangalore, India",
      "birth_date": "16/10/1918",
      "birth_time": "14:20",
      "system": "Shastihayani",
      "levels": 1
    }
  }
}

The date tool defaults to levels 3 and midday; the life tool defaults to level 1. Both use Raman Ayanamsa. Moola requires level 1. Deep whole-life expansions can be very large: prefer a date query for fine detail. Read raw_dasa.DasaAtTime or raw_dasa.DasaForLife; check IsApplicable, ApplicabilityReason and YearConvention. Intervals include Start and exclude End. Life periods use response-local Id/ParentId; keep Sudarsana tracks separate. These are calculation results, not generated predictions.

Developer API examplesHTTP requests and five official SDKs

Take it into your app.

Use an official client library or send a raw HTTP POST request to the public VedAstro API at https://vedastro.zaishi.net/api/Calculate. Choose a language below. These are recorded examples; use the calculator above for a live result.

JavaScript is disabled. All five default SDK examples and the complete system/reference content remain available. Every other example is available in the complete inline sample archive below.

Python pip install vedastroOfficial SDK repository ↗

from vedastro import Calculate, Time, GeoLocation, PlanetName, ZodiacName
import json

Calculate.SetAPIKey("FreeAPIUser")
Calculate.SetAyanamsa("RAMAN")
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate"
location = GeoLocation("Bangalore", 77.5833, 12.9667)
birthTime = Time("14:20 16/10/1918 +05:30", location)
result = Calculate.DasaForLife(birthTime, "Shastihayani", depth=2)
print(json.dumps(result, indent=2))

Node.js npm install vedastroOfficial SDK repository ↗

import { Calculate, Time, GeoLocation, DasaSystem, PlanetName, ZodiacName } from "vedastro";

Calculate.SetAPIKey("FreeAPIUser");
Calculate.SetAyanamsa("RAMAN");
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate";
const location = new GeoLocation("Bangalore", 77.5833, 12.9667);
const birthTime = new Time("14:20 16/10/1918 +05:30", location);
const result = await Calculate.DasaForLife(birthTime, DasaSystem.Shastihayani, 2);
console.log(JSON.stringify(result, null, 2));

Dart dart pub add vedastroOfficial SDK repository ↗

import 'dart:convert';
import 'package:vedastro/vedastro.dart';

Future<void> main() async {
  final client = VedAstroClient(apiKey: 'FreeAPIUser',
    baseUrl: 'https://vedastro.zaishi.net/api/Calculate', defaultAyanamsa: Ayanamsa.raman);
  try {
    final location = GeoLocation.of('Bangalore', 77.5833, 12.9667);
    final birthTime = Time.of("14:20 16/10/1918 +05:30", location);
    final result = await client.calculate().dasaForLife(birthTime, system: DasaSystem.shastihayani, depth: 2);
    print(const JsonEncoder.withIndent("  ").convert(result));
  } finally {
    client.close();
  }
}

Go go get github.com/VedAstro/VedAstro.GoOfficial SDK repository ↗

package main

import (
 "context"
 "encoding/json"
 "fmt"
 vedastro "github.com/VedAstro/VedAstro.Go"
)

func main() {
    client := vedastro.NewClient("FreeAPIUser",
        vedastro.WithBaseURL("https://vedastro.zaishi.net/api/Calculate"),
        vedastro.WithDefaultAyanamsa(vedastro.AyanamsaRaman))
    location := vedastro.NewGeoLocation("Bangalore", 77.5833, 12.9667)
    birthTime, err := vedastro.NewTime("14:20 16/10/1918 +05:30", location)
    if err != nil { panic(err) }
    result, err := client.DasaForLife(context.Background(), birthTime, vedastro.DasaForLifeOptions{System: vedastro.Ptr(vedastro.DasaSystemShastihayani), Depth: vedastro.Ptr(2)})
    if err != nil { panic(err) }
    data, err := json.MarshalIndent(result, "", "  ")
    if err != nil { panic(err) }
    fmt.Println(string(data))
}

Java org.vedastro:vedastro:1.0.0Official SDK repository ↗

import java.util.List;
import org.vedastro.*;
import org.vedastro.calculate.*;

class DasaExample {
    public static void main(String[] args) {
        var client = VedAstroClient.builder().apiKey("FreeAPIUser")
            .baseUrl("https://vedastro.zaishi.net/api/Calculate")
            .defaultAyanamsa(Ayanamsa.RAMAN).build();
        var location = GeoLocation.of("Bangalore", 77.5833, 12.9667);
        var birthTime = Time.of("14:20 16/10/1918 +05:30", location);
        var options = new Calculators.DasaForLifeOptions();
        options.system = DasaSystem.SHASTIHAYANI;
        options.depth = 2;
        var result = client.calculate().dasaForLife(birthTime, options);
        System.out.println(Json.encode(result));
    }
}

Example API response · Shastihayani

View full inline example ↓

View recorded JSON response

{
  "System": "Shastihayani",
  "Method": "Shastihayani",
  "MethodReason": "Sun placed in Lagna",
  "YearConvention": "TrueSiderealSolar",
  "Birth": "1918-10-16T14:20:00+05:30",
  "End": "1978-10-16T23:28:49.7119194+05:30",
  "LifeSpanYears": 60.0,
  "IsApplicable": false,
  "ApplicabilityReason": "Sun placed in Lagna",
  "Periods": [
    {
      "Id": 1,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1918-10-16T14:20:00+05:30",
      "End": "1924-04-07T19:22:54.1455075+05:30",
      "Track": null
    },
    {
      "Id": 2,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1918-10-16T14:20:00+05:30",
      "End": "1918-11-16T19:16:59.0459502+05:30",
      "Track": null
    },
    {
      "Id": 3,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1918-11-16T19:16:59.0459502+05:30",
      "End": "1919-11-17T01:29:14.9541208+05:30",
      "Track": null
    },
    {
      "Id": 4,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1919-11-17T01:29:14.9541208+05:30",
      "End": "1920-11-16T07:34:46.2126148+05:30",
      "Track": null
    },
    {
      "Id": 5,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1920-11-16T07:34:46.2126148+05:30",
      "End": "1921-11-16T13:40:13.9797168+05:30",
      "Track": null
    },
    {
      "Id": 6,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1921-11-16T13:40:13.9797168+05:30",
      "End": "1922-06-21T21:07:49.3330137+05:30",
      "Track": null
    },
    {
      "Id": 7,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1922-06-21T21:07:49.3330137+05:30",
      "End": "1923-01-26T15:52:18.2331179+05:30",
      "Track": null
    },
    {
      "Id": 8,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1923-01-26T15:52:18.2331179+05:30",
      "End": "1923-09-05T07:03:57.4631166+05:30",
      "Track": null
    },
    {
      "Id": 9,
      "ParentId": 1,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1923-09-05T07:03:57.4631166+05:30",
      "End": "1924-04-07T19:22:54.1455075+05:30",
      "Track": null
    },
    {
      "Id": 10,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1924-04-07T19:22:54.1455075+05:30",
      "End": "1934-04-08T09:07:13.7495295+05:30",
      "Track": null
    },
    {
      "Id": 11,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1924-04-07T19:22:54.1455075+05:30",
      "End": "1925-12-10T07:17:00.3390842+05:30",
      "Track": null
    },
    {
      "Id": 12,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1925-12-10T07:17:00.3390842+05:30",
      "End": "1927-08-11T10:02:47.6875784+05:30",
      "Track": null
    },
    {
      "Id": 13,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1927-08-11T10:02:47.6875784+05:30",
      "End": "1929-04-08T02:21:22.0749783+05:30",
      "Track": null
    },
    {
      "Id": 14,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1929-04-08T02:21:22.0749783+05:30",
      "End": "1930-04-08T08:30:57.7739017+05:30",
      "Track": null
    },
    {
      "Id": 15,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1930-04-08T08:30:57.7739017+05:30",
      "End": "1931-04-08T14:37:03.0206106+05:30",
      "Track": null
    },
    {
      "Id": 16,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1931-04-08T14:37:03.0206106+05:30",
      "End": "1932-04-07T20:43:30.9501472+05:30",
      "Track": null
    },
    {
      "Id": 17,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1932-04-07T20:43:30.9501472+05:30",
      "End": "1933-04-08T02:52:55.8994243+05:30",
      "Track": null
    },
    {
      "Id": 18,
      "ParentId": 10,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1933-04-08T02:52:55.8994243+05:30",
      "End": "1934-04-08T09:07:13.7495295+05:30",
      "Track": null
    },
    {
      "Id": 19,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1934-04-08T09:07:13.7495295+05:30",
      "End": "1944-04-07T22:32:34.6883008+05:30",
      "Track": null
    },
    {
      "Id": 20,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1934-04-08T09:07:13.7495295+05:30",
      "End": "1935-12-10T20:41:26.8058152+05:30",
      "Track": null
    },
    {
      "Id": 21,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1935-12-10T20:41:26.8058152+05:30",
      "End": "1937-08-10T23:38:05.7664938+05:30",
      "Track": null
    },
    {
      "Id": 22,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1937-08-10T23:38:05.7664938+05:30",
      "End": "1938-08-11T05:47:58.0759171+05:30",
      "Track": null
    },
    {
      "Id": 23,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1938-08-11T05:47:58.0759171+05:30",
      "End": "1939-08-11T11:56:10.4567736+05:30",
      "Track": null
    },
    {
      "Id": 24,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1939-08-11T11:56:10.4567736+05:30",
      "End": "1940-08-10T18:02:59.2827021+05:30",
      "Track": null
    },
    {
      "Id": 25,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1940-08-10T18:02:59.2827021+05:30",
      "End": "1941-08-11T00:17:48.4602735+05:30",
      "Track": null
    },
    {
      "Id": 26,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1941-08-11T00:17:48.4602735+05:30",
      "End": "1942-08-11T06:17:47.6064527+05:30",
      "Track": null
    },
    {
      "Id": 27,
      "ParentId": 19,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1942-08-11T06:17:47.6064527+05:30",
      "End": "1944-04-07T22:32:34.6883008+05:30",
      "Track": null
    },
    {
      "Id": 28,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1944-04-07T22:32:34.6883008+05:30",
      "End": "1954-04-08T12:11:47.9141361+05:30",
      "Track": null
    },
    {
      "Id": 29,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1944-04-07T22:32:34.6883008+05:30",
      "End": "1945-12-10T10:07:12.1986111+05:30",
      "Track": null
    },
    {
      "Id": 30,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1945-12-10T10:07:12.1986111+05:30",
      "End": "1946-12-10T16:22:11.1669211+05:30",
      "Track": null
    },
    {
      "Id": 31,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1946-12-10T16:22:11.1669211+05:30",
      "End": "1947-12-10T22:36:16.6865891+05:30",
      "Track": null
    },
    {
      "Id": 32,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1947-12-10T22:36:16.6865891+05:30",
      "End": "1948-12-10T04:40:20.0178308+05:30",
      "Track": null
    },
    {
      "Id": 33,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1948-12-10T04:40:20.0178308+05:30",
      "End": "1949-12-10T10:59:16.01903+05:30",
      "Track": null
    },
    {
      "Id": 34,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1949-12-10T10:59:16.01903+05:30",
      "End": "1950-12-10T17:07:01.3057608+05:30",
      "Track": null
    },
    {
      "Id": 35,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1950-12-10T17:07:01.3057608+05:30",
      "End": "1952-08-10T19:58:48.2708515+05:30",
      "Track": null
    },
    {
      "Id": 36,
      "ParentId": 28,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1952-08-10T19:58:48.2708515+05:30",
      "End": "1954-04-08T12:11:47.9141361+05:30",
      "Track": null
    },
    {
      "Id": 37,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1954-04-08T12:11:47.9141361+05:30",
      "End": "1960-04-08T00:53:27.9225419+05:30",
      "Track": null
    },
    {
      "Id": 38,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1954-04-08T12:11:47.9141361+05:30",
      "End": "1954-11-17T00:53:25.9333995+05:30",
      "Track": null
    },
    {
      "Id": 39,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1954-11-17T00:53:25.9333995+05:30",
      "End": "1955-06-22T07:54:44.630883+05:30",
      "Track": null
    },
    {
      "Id": 40,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1955-06-22T07:54:44.630883+05:30",
      "End": "1956-01-27T03:07:42.0047754+05:30",
      "Track": null
    },
    {
      "Id": 41,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1956-01-27T03:07:42.0047754+05:30",
      "End": "1956-09-04T17:58:22.198566+05:30",
      "Track": null
    },
    {
      "Id": 42,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1956-09-04T17:58:22.198566+05:30",
      "End": "1957-04-08T06:32:39.6716238+05:30",
      "Track": null
    },
    {
      "Id": 43,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1957-04-08T06:32:39.6716238+05:30",
      "End": "1958-04-08T12:46:24.9114682+05:30",
      "Track": null
    },
    {
      "Id": 44,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1958-04-08T12:46:24.9114682+05:30",
      "End": "1959-04-08T18:52:31.666833+05:30",
      "Track": null
    },
    {
      "Id": 45,
      "ParentId": 37,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1959-04-08T18:52:31.666833+05:30",
      "End": "1960-04-08T00:53:27.9225419+05:30",
      "Track": null
    },
    {
      "Id": 46,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1960-04-08T00:53:27.9225419+05:30",
      "End": "1966-04-08T14:04:42.2637706+05:30",
      "Track": null
    },
    {
      "Id": 47,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1960-04-08T00:53:27.9225419+05:30",
      "End": "1960-11-16T13:50:48.8219394+05:30",
      "Track": null
    },
    {
      "Id": 48,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1960-11-16T13:50:48.8219394+05:30",
      "End": "1961-06-21T20:48:54.9860013+05:30",
      "Track": null
    },
    {
      "Id": 49,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1961-06-21T20:48:54.9860013+05:30",
      "End": "1962-01-26T16:05:37.5724229+05:30",
      "Track": null
    },
    {
      "Id": 50,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1962-01-26T16:05:37.5724229+05:30",
      "End": "1962-09-05T06:45:06.2332314+05:30",
      "Track": null
    },
    {
      "Id": 51,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1962-09-05T06:45:06.2332314+05:30",
      "End": "1963-09-05T12:59:24.8070175+05:30",
      "Track": null
    },
    {
      "Id": 52,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1963-09-05T12:59:24.8070175+05:30",
      "End": "1964-09-04T19:10:51.9980812+05:30",
      "Track": null
    },
    {
      "Id": 53,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1964-09-04T19:10:51.9980812+05:30",
      "End": "1965-09-05T01:17:55.3754742+05:30",
      "Track": null
    },
    {
      "Id": 54,
      "ParentId": 46,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1965-09-05T01:17:55.3754742+05:30",
      "End": "1966-04-08T14:04:42.2637706+05:30",
      "Track": null
    },
    {
      "Id": 55,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1966-04-08T14:04:42.2637706+05:30",
      "End": "1972-04-08T02:49:44.415419+05:30",
      "Track": null
    },
    {
      "Id": 56,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1966-04-08T14:04:42.2637706+05:30",
      "End": "1966-11-17T02:39:19.9249034+05:30",
      "Track": null
    },
    {
      "Id": 57,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1966-11-17T02:39:19.9249034+05:30",
      "End": "1967-06-22T09:47:54.6454736+05:30",
      "Track": null
    },
    {
      "Id": 58,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1967-06-22T09:47:54.6454736+05:30",
      "End": "1968-01-27T04:58:48.2198167+05:30",
      "Track": null
    },
    {
      "Id": 59,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1968-01-27T04:58:48.2198167+05:30",
      "End": "1969-01-26T11:04:36.9273396+05:30",
      "Track": null
    },
    {
      "Id": 60,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1969-01-26T11:04:36.9273396+05:30",
      "End": "1970-01-26T17:16:53.8631115+05:30",
      "Track": null
    },
    {
      "Id": 61,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1970-01-26T17:16:53.8631115+05:30",
      "End": "1971-01-26T23:21:17.3974387+05:30",
      "Track": null
    },
    {
      "Id": 62,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1971-01-26T23:21:17.3974387+05:30",
      "End": "1971-09-05T14:15:02.916122+05:30",
      "Track": null
    },
    {
      "Id": 63,
      "ParentId": 55,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1971-09-05T14:15:02.916122+05:30",
      "End": "1972-04-08T02:49:44.415419+05:30",
      "Track": null
    },
    {
      "Id": 64,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1972-04-08T02:49:44.415419+05:30",
      "End": "1978-04-08T15:55:53.0685899+05:30",
      "Track": null
    },
    {
      "Id": 65,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Saturn"
      },
      "Start": "1972-04-08T02:49:44.415419+05:30",
      "End": "1972-11-16T15:36:09.2831191+05:30",
      "Track": null
    },
    {
      "Id": 66,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1972-11-16T15:36:09.2831191+05:30",
      "End": "1973-06-21T22:43:14.41593+05:30",
      "Track": null
    },
    {
      "Id": 67,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Jupiter"
      },
      "Start": "1973-06-21T22:43:14.41593+05:30",
      "End": "1974-06-22T04:41:14.4177107+05:30",
      "Track": null
    },
    {
      "Id": 68,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Sun"
      },
      "Start": "1974-06-22T04:41:14.4177107+05:30",
      "End": "1975-06-22T10:50:25.8827491+05:30",
      "Track": null
    },
    {
      "Id": 69,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mars"
      },
      "Start": "1975-06-22T10:50:25.8827491+05:30",
      "End": "1976-06-21T17:07:33.4594023+05:30",
      "Track": null
    },
    {
      "Id": 70,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Moon"
      },
      "Start": "1976-06-21T17:07:33.4594023+05:30",
      "End": "1977-01-26T12:22:01.4984303+05:30",
      "Track": null
    },
    {
      "Id": 71,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Mercury"
      },
      "Start": "1977-01-26T12:22:01.4984303+05:30",
      "End": "1977-09-05T03:04:05.7505354+05:30",
      "Track": null
    },
    {
      "Id": 72,
      "ParentId": 64,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Venus"
      },
      "Start": "1977-09-05T03:04:05.7505354+05:30",
      "End": "1978-04-08T15:55:53.0685899+05:30",
      "Track": null
    },
    {
      "Id": 73,
      "ParentId": null,
      "Level": 1,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1978-04-08T15:55:53.0685899+05:30",
      "End": "1978-10-16T23:28:49.7119194+05:30",
      "Track": null
    },
    {
      "Id": 74,
      "ParentId": 73,
      "Level": 2,
      "Lord": {
        "Kind": "Planet",
        "Name": "Rahu"
      },
      "Start": "1978-04-08T15:55:53.0685899+05:30",
      "End": "1978-10-16T23:28:49.7119194+05:30",
      "Track": null
    }
  ],
  "Notes": []
}

Raw HTTP / cURL and JSON request

POST https://vedastro.zaishi.net/api/Calculate/DasaForLife. SDKs unwrap Payload.DasaForLife; raw HTTP includes Status, Input and Payload. Check Status before reading Payload.

curl --request POST https://vedastro.zaishi.net/api/Calculate/DasaForLife \\
  --header 'Content-Type: application/json' \\
  --data-binary @request.json

{
  "birthTime": {
    "StdTime": "14:20 16/10/1918 +05:30",
    "Location": {
      "Name": "Bangalore",
      "Longitude": 77.5833,
      "Latitude": 12.9667
    }
  },
  "system": "Shastihayani",
  "depth": 2,
  "Ayanamsa": "RAMAN",
  "APIKey": "FreeAPIUser"
}

Recorded calculation exampleSample birth details and period boundaries

A recorded Shastihayani example

Birth: 14:20 16/10/1918 +05:30, Bangalore (longitude 77.5833, latitude 12.9667), Raman Ayanamsa. The following are the first 4 major periods from the actual recorded response.

Resolved method: Shastihayani. Sun placed in Lagna

Lord	Start	End (exclusive)
Rahu	1918-10-16T14:20:00+05:30	1924-04-07T19:22:54.1455075+05:30
Jupiter	1924-04-07T19:22:54.1455075+05:30	1934-04-08T09:07:13.7495295+05:30
Sun	1934-04-08T09:07:13.7495295+05:30	1944-04-07T22:32:34.6883008+05:30
Mars	1944-04-07T22:32:34.6883008+05:30	1954-04-08T12:11:47.9141361+05:30

Sample applicability: conditions not met. Sun placed in Lagna

Read the complete request, response and SDK examples ↓

Sources and calculation limitsRath chapter 14, Table 51

These rules follow the cited Rath sections and the implementation audit. Worked calculations demonstrate what this API returns; they do not establish predictive accuracy. The audit distinguishes exact solar-motion dates from approximate printed year/month/day arithmetic.

Rath chapter 14, Table 51

Understand the responsePeriod fields, hierarchy and timestamps

04 / FROM JSON TO UI

One period model. No interpretation.

DasaForLife returns a single chronological Periods array. Each level defined by the system is present, up to the requested depth. Filter by Level to draw bands, or follow ParentId to build a tree.

Flat timeline

Level 1 = Mahadasa, 2 = Bhukti, 3 = Antaram, through level 8.

// Node.js
const bhuktis = result.Periods.filter(p => p.Level === 2);

Nested display

Ids are local to this response. A root has no parent; a child references its enclosing period.

Id 1 · Rahu · Level 1
├─ Id 2 · Saturn · ParentId 1
└─ Id 3 · Mercury · ParentId 1

Dasa period response fields
Field	How to use it
`Id / ParentId`	Response-local integer id and nullable parent id. Build relationships within this result; do not store them as permanent identifiers.
`Level`	Subdivision depth, 1–8. Systems that define no subperiods return level 1 only.
`Lord`	`{ Kind, Name }`. Kind is `Planet` or `Sign`; planetary systems and rasi systems share one shape.
`Start / End`	ISO timestamps with offset. Half-open intervals: [Start, End). The first period starts at birth; its natural beginning may be earlier.
`Track`	Null for single-track systems. Sudarsana returns three tracks: Lagna, Moon and Sun.

Metadata explains the calculation: System, Method, MethodReason, YearConvention, LifeSpanYears, IsApplicable, ApplicabilityReason and display-only Notes.

Point snapshots

DasaAtTime returns Levels with Level, Type, Lord, Start and End for the chain running at at.

Separate clocks

Ayanamsa sets zodiac positions. DasaOptions.YearConvention sets duration. Janma defaults to 360-day years; Chara and Kalachakra use mean tropical years; other selections use true sidereal solar motion.

API reference & advanced discoverySignatures, parameters and CheckDasaSystemApplicability

05 / API REFERENCE

Small methods. Explicit choices.

Signatures below use API wire names and server defaults. Python and Node.js retain PascalCase method names; Dart and Java use lowerCamelCase; Go retains PascalCase with a context first and an optional options struct.

DasaForLife

DasaForLife(birthTime, system = Vimshottari, depth = 3, options = null)

The whole system-defined life as one chronological Periods array.

Open example →

DasaAtTime

DasaAtTime(birthTime, at, system = Vimshottari, depth = 3, options = null)

The running chain at one moment, with the start and end of every level.

Open example →

CheckDasaSystemApplicability

CheckDasaSystemApplicability(birthTime)

Advanced discovery: every supported system, whether it applies to this chart, why, its life span and whether it defines subperiods.

Open example →

Parameters

Parameter	Required / default	Meaning
`birthTime`	Required	Time and birth location.
`at`	Required for DasaAtTime	Moment to inspect; must be inside the system's life.
`system`	Vimshottari	One of the 24 forms. Explicit choices are never silently replaced.
`depth`	3	Integer 1–8. Start with 1 or 2 for long spans.
`options`	null	`YearConvention`, plus Kalachakra, Shoola or Narayana Sama settings only for those systems.

Events charts use a separate path

LifePredictor and Events APIs keep their sampled time-slice evaluation. Dasa calls return raw periods and no interpretation; use the API builder for event/chart calls.

Install an official SDKPython, Node.js, Dart, Go and Java

06 / OFFICIAL CLIENT LIBRARIES

Use the SDK you already know.

Each client library sends requests to the same hosted VedAstro API. Install the SDK for your language, then use the examples above with the public API base URL. Keep API keys in your application configuration; the public examples use FreeAPIUser.

Pythonpip install vedastroSource & setup ↗

Node.jsnpm install vedastroSource & setup ↗

Dartdart pub add vedastroSource & setup ↗

Gogo get github.com/VedAstro/VedAstro.GoSource & setup ↗

Javaorg.vedastro:vedastro:1.0.0Source & setup ↗

API base URL: https://vedastro.zaishi.net/api/Calculate

Also explore the API overview, interactive API builder, Python library guide and Postman collection.

Complete inline examplesFive SDKs, requests and recorded responses

Shastihayani · DasaForLife

Python SDK example

from vedastro import Calculate, Time, GeoLocation, PlanetName, ZodiacName
import json

Calculate.SetAPIKey("FreeAPIUser")
Calculate.SetAyanamsa("RAMAN")
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate"
location = GeoLocation("Bangalore", 77.5833, 12.9667)
birthTime = Time("14:20 16/10/1918 +05:30", location)
result = Calculate.DasaForLife(birthTime, "Shastihayani", depth=2)
print(json.dumps(result, indent=2))

Node.js SDK example

import { Calculate, Time, GeoLocation, DasaSystem, PlanetName, ZodiacName } from "vedastro";

Calculate.SetAPIKey("FreeAPIUser");
Calculate.SetAyanamsa("RAMAN");
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate";
const location = new GeoLocation("Bangalore", 77.5833, 12.9667);
const birthTime = new Time("14:20 16/10/1918 +05:30", location);
const result = await Calculate.DasaForLife(birthTime, DasaSystem.Shastihayani, 2);
console.log(JSON.stringify(result, null, 2));

Dart SDK example

import 'dart:convert';
import 'package:vedastro/vedastro.dart';

Future<void> main() async {
  final client = VedAstroClient(apiKey: 'FreeAPIUser',
    baseUrl: 'https://vedastro.zaishi.net/api/Calculate', defaultAyanamsa: Ayanamsa.raman);
  try {
    final location = GeoLocation.of('Bangalore', 77.5833, 12.9667);
    final birthTime = Time.of("14:20 16/10/1918 +05:30", location);
    final result = await client.calculate().dasaForLife(birthTime, system: DasaSystem.shastihayani, depth: 2);
    print(const JsonEncoder.withIndent("  ").convert(result));
  } finally {
    client.close();
  }
}

Go SDK example

package main

import (
 "context"
 "encoding/json"
 "fmt"
 vedastro "github.com/VedAstro/VedAstro.Go"
)

func main() {
    client := vedastro.NewClient("FreeAPIUser",
        vedastro.WithBaseURL("https://vedastro.zaishi.net/api/Calculate"),
        vedastro.WithDefaultAyanamsa(vedastro.AyanamsaRaman))
    location := vedastro.NewGeoLocation("Bangalore", 77.5833, 12.9667)
    birthTime, err := vedastro.NewTime("14:20 16/10/1918 +05:30", location)
    if err != nil { panic(err) }
    result, err := client.DasaForLife(context.Background(), birthTime, vedastro.DasaForLifeOptions{System: vedastro.Ptr(vedastro.DasaSystemShastihayani), Depth: vedastro.Ptr(2)})
    if err != nil { panic(err) }
    data, err := json.MarshalIndent(result, "", "  ")
    if err != nil { panic(err) }
    fmt.Println(string(data))
}

Java SDK example

import java.util.List;
import org.vedastro.*;
import org.vedastro.calculate.*;

class DasaExample {
    public static void main(String[] args) {
        var client = VedAstroClient.builder().apiKey("FreeAPIUser")
            .baseUrl("https://vedastro.zaishi.net/api/Calculate")
            .defaultAyanamsa(Ayanamsa.RAMAN).build();
        var location = GeoLocation.of("Bangalore", 77.5833, 12.9667);
        var birthTime = Time.of("14:20 16/10/1918 +05:30", location);
        var options = new Calculators.DasaForLifeOptions();
        options.system = DasaSystem.SHASTIHAYANI;
        options.depth = 2;
        var result = client.calculate().dasaForLife(birthTime, options);
        System.out.println(Json.encode(result));
    }
}

Complete recorded request and response

{
  "capturedOn": "2026-10-26",
  "endpoint": "DasaForLife",
  "request": {
    "birthTime": {
      "StdTime": "14:20 16/10/1918 +05:30",
      "Location": {
        "Name": "Bangalore",
        "Longitude": 77.5833,
        "Latitude": 12.9667
      }
    },
    "system": "Shastihayani",
    "depth": 2,
    "Ayanamsa": "RAMAN",
    "APIKey": "FreeAPIUser"
  },
  "response": {
    "Status": "Pass",
    "Input": {
      "CalculatorName": "DasaForLife",
      "Type": "SingleCall",
      "Ayanamsa": 3,
      "Parameters": [
        {
          "Name": "birthTime",
          "Type": "Time",
          "Value": {
            "StdTime": "14:20 16/10/1918 +05:30",
            "Location": {
              "Name": "Bangalore",
              "Longitude": 77.5833,
              "Latitude": 12.9667
            }
          }
        },
        {
          "Name": "system",
          "Type": "DasaSystem",
          "Value": "Shastihayani"
        },
        {
          "Name": "depth",
          "Type": "Int32",
          "Value": "2"
        },
        {
          "Name": "options",
          "Type": "DasaOptions",
          "Value": null
        }
      ]
    },
    "Payload": {
      "DasaForLife": {
        "System": "Shastihayani",
        "Method": "Shastihayani",
        "MethodReason": "Sun placed in Lagna",
        "YearConvention": "TrueSiderealSolar",
        "Birth": "1918-10-16T14:20:00+05:30",
        "End": "1978-10-16T23:28:49.7119194+05:30",
        "LifeSpanYears": 60.0,
        "IsApplicable": false,
        "ApplicabilityReason": "Sun placed in Lagna",
        "Periods": [
          {
            "Id": 1,
            "ParentId": null,
            "Level": 1,
            "Lord": {
              "Kind": "Planet",
              "Name": "Rahu"
            },
            "Start": "1918-10-16T14:20:00+05:30",
            "End": "1924-04-07T19:22:54.1455075+05:30",
            "Track": null
          },
          {
            "Id": 2,
            "ParentId": 1,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Rahu"
            },
            "Start": "1918-10-16T14:20:00+05:30",
            "End": "1918-11-16T19:16:59.0459502+05:30",
            "Track": null
          },
          {
            "Id": 3,
            "ParentId": 1,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Jupiter"
            },
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            },
            "Start": "1974-06-22T04:41:14.4177107+05:30",
            "End": "1975-06-22T10:50:25.8827491+05:30",
            "Track": null
          },
          {
            "Id": 69,
            "ParentId": 64,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Mars"
            },
            "Start": "1975-06-22T10:50:25.8827491+05:30",
            "End": "1976-06-21T17:07:33.4594023+05:30",
            "Track": null
          },
          {
            "Id": 70,
            "ParentId": 64,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Moon"
            },
            "Start": "1976-06-21T17:07:33.4594023+05:30",
            "End": "1977-01-26T12:22:01.4984303+05:30",
            "Track": null
          },
          {
            "Id": 71,
            "ParentId": 64,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Mercury"
            },
            "Start": "1977-01-26T12:22:01.4984303+05:30",
            "End": "1977-09-05T03:04:05.7505354+05:30",
            "Track": null
          },
          {
            "Id": 72,
            "ParentId": 64,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Venus"
            },
            "Start": "1977-09-05T03:04:05.7505354+05:30",
            "End": "1978-04-08T15:55:53.0685899+05:30",
            "Track": null
          },
          {
            "Id": 73,
            "ParentId": null,
            "Level": 1,
            "Lord": {
              "Kind": "Planet",
              "Name": "Rahu"
            },
            "Start": "1978-04-08T15:55:53.0685899+05:30",
            "End": "1978-10-16T23:28:49.7119194+05:30",
            "Track": null
          },
          {
            "Id": 74,
            "ParentId": 73,
            "Level": 2,
            "Lord": {
              "Kind": "Planet",
              "Name": "Rahu"
            },
            "Start": "1978-04-08T15:55:53.0685899+05:30",
            "End": "1978-10-16T23:28:49.7119194+05:30",
            "Track": null
          }
        ],
        "Notes": []
      }
    }
  }
}

DasaAtTime · DasaAtTime

Python SDK example

from vedastro import Calculate, Time, GeoLocation, PlanetName, ZodiacName
import json

Calculate.SetAPIKey("FreeAPIUser")
Calculate.SetAyanamsa("RAMAN")
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate"
location = GeoLocation("Bangalore", 77.5833, 12.9667)
birthTime = Time("14:20 16/10/1918 +05:30", location)
at = Time("12:00 17/10/1918 +05:30", location)
result = Calculate.DasaAtTime(birthTime, at, "Shastihayani", depth=3)
print(json.dumps(result, indent=2))

Node.js SDK example

import { Calculate, Time, GeoLocation, DasaSystem, PlanetName, ZodiacName } from "vedastro";

Calculate.SetAPIKey("FreeAPIUser");
Calculate.SetAyanamsa("RAMAN");
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate";
const location = new GeoLocation("Bangalore", 77.5833, 12.9667);
const birthTime = new Time("14:20 16/10/1918 +05:30", location);
const at = new Time("12:00 17/10/1918 +05:30", location);
const result = await Calculate.DasaAtTime(birthTime, at, DasaSystem.Shastihayani, 3);
console.log(JSON.stringify(result, null, 2));

Dart SDK example

import 'dart:convert';
import 'package:vedastro/vedastro.dart';

Future<void> main() async {
  final client = VedAstroClient(apiKey: 'FreeAPIUser',
    baseUrl: 'https://vedastro.zaishi.net/api/Calculate', defaultAyanamsa: Ayanamsa.raman);
  try {
    final location = GeoLocation.of('Bangalore', 77.5833, 12.9667);
    final birthTime = Time.of("14:20 16/10/1918 +05:30", location);
    final at = Time.of("12:00 17/10/1918 +05:30", location);
    final result = await client.calculate().dasaAtTime(birthTime, at, system: DasaSystem.shastihayani, depth: 3);
    print(const JsonEncoder.withIndent("  ").convert(result));
  } finally {
    client.close();
  }
}

Go SDK example

package main

import (
 "context"
 "encoding/json"
 "fmt"
 vedastro "github.com/VedAstro/VedAstro.Go"
)

func main() {
    client := vedastro.NewClient("FreeAPIUser",
        vedastro.WithBaseURL("https://vedastro.zaishi.net/api/Calculate"),
        vedastro.WithDefaultAyanamsa(vedastro.AyanamsaRaman))
    location := vedastro.NewGeoLocation("Bangalore", 77.5833, 12.9667)
    birthTime, err := vedastro.NewTime("14:20 16/10/1918 +05:30", location)
    if err != nil { panic(err) }
    at, err := vedastro.NewTime("12:00 17/10/1918 +05:30", location)
    if err != nil { panic(err) }
    result, err := client.DasaAtTime(context.Background(), birthTime, at, vedastro.DasaAtTimeOptions{System: vedastro.Ptr(vedastro.DasaSystemShastihayani), Depth: vedastro.Ptr(3)})
    if err != nil { panic(err) }
    data, err := json.MarshalIndent(result, "", "  ")
    if err != nil { panic(err) }
    fmt.Println(string(data))
}

Java SDK example

import java.util.List;
import org.vedastro.*;
import org.vedastro.calculate.*;

class DasaExample {
    public static void main(String[] args) {
        var client = VedAstroClient.builder().apiKey("FreeAPIUser")
            .baseUrl("https://vedastro.zaishi.net/api/Calculate")
            .defaultAyanamsa(Ayanamsa.RAMAN).build();
        var location = GeoLocation.of("Bangalore", 77.5833, 12.9667);
        var birthTime = Time.of("14:20 16/10/1918 +05:30", location);
        var at = Time.of("12:00 17/10/1918 +05:30", location);
        var options = new Calculators.DasaAtTimeOptions();
        options.system = DasaSystem.SHASTIHAYANI;
        options.depth = 3;
        var result = client.calculate().dasaAtTime(birthTime, at, options);
        System.out.println(Json.encode(result));
    }
}

Complete recorded request and response

{
  "capturedOn": "2026-10-26",
  "endpoint": "DasaAtTime",
  "request": {
    "birthTime": {
      "StdTime": "14:20 16/10/1918 +05:30",
      "Location": {
        "Name": "Bangalore",
        "Longitude": 77.5833,
        "Latitude": 12.9667
      }
    },
    "at": {
      "StdTime": "12:00 17/10/1918 +05:30",
      "Location": {
        "Name": "Bangalore",
        "Longitude": 77.5833,
        "Latitude": 12.9667
      }
    },
    "system": "Shastihayani",
    "depth": 3,
    "Ayanamsa": "RAMAN",
    "APIKey": "FreeAPIUser"
  },
  "response": {
    "Status": "Pass",
    "Input": {
      "CalculatorName": "DasaAtTime",
      "Type": "SingleCall",
      "Ayanamsa": 3,
      "Parameters": [
        {
          "Name": "birthTime",
          "Type": "Time",
          "Value": {
            "StdTime": "14:20 16/10/1918 +05:30",
            "Location": {
              "Name": "Bangalore",
              "Longitude": 77.5833,
              "Latitude": 12.9667
            }
          }
        },
        {
          "Name": "at",
          "Type": "Time",
          "Value": {
            "StdTime": "12:00 17/10/1918 +05:30",
            "Location": {
              "Name": "Bangalore",
              "Longitude": 77.5833,
              "Latitude": 12.9667
            }
          }
        },
        {
          "Name": "system",
          "Type": "DasaSystem",
          "Value": "Shastihayani"
        },
        {
          "Name": "depth",
          "Type": "Int32",
          "Value": "3"
        },
        {
          "Name": "options",
          "Type": "DasaOptions",
          "Value": null
        }
      ]
    },
    "Payload": {
      "DasaAtTime": {
        "System": "Shastihayani",
        "Method": "Shastihayani",
        "MethodReason": "Sun placed in Lagna",
        "Time": "1918-10-17T12:00:00+05:30",
        "YearConvention": "TrueSiderealSolar",
        "LifeSpanYears": 60.0,
        "IsApplicable": false,
        "ApplicabilityReason": "Sun placed in Lagna",
        "Levels": [
          {
            "Level": 1,
            "Type": "Dasa",
            "Lord": {
              "Kind": "Planet",
              "Name": "Rahu"
            },
            "Start": "1918-10-16T14:20:00+05:30",
            "End": "1924-04-07T19:22:54.1455075+05:30",
            "Track": null
          },
          {
            "Level": 2,
            "Type": "Bhukti",
            "Lord": {
              "Kind": "Planet",
              "Name": "Rahu"
            },
            "Start": "1918-10-16T14:20:00+05:30",
            "End": "1918-11-16T19:16:59.0459502+05:30",
            "Track": null
          },
          {
            "Level": 3,
            "Type": "Antaram",
            "Lord": {
              "Kind": "Planet",
              "Name": "Venus"
            },
            "Start": "1918-10-16T14:20:00+05:30",
            "End": "1918-10-26T06:28:19.9604627+05:30",
            "Track": null
          }
        ],
        "Notes": []
      }
    }
  }
}

CheckDasaSystemApplicability · CheckDasaSystemApplicability

Python SDK example

from vedastro import Calculate, Time, GeoLocation, PlanetName, ZodiacName
import json

Calculate.SetAPIKey("FreeAPIUser")
Calculate.SetAyanamsa("RAMAN")
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate"
location = GeoLocation("Bangalore", 77.5833, 12.9667)
birthTime = Time("14:20 16/10/1918 +05:30", location)
result = Calculate.CheckDasaSystemApplicability(birthTime)
print(json.dumps(result, indent=2))

Node.js SDK example

import { Calculate, Time, GeoLocation, DasaSystem, PlanetName, ZodiacName } from "vedastro";

Calculate.SetAPIKey("FreeAPIUser");
Calculate.SetAyanamsa("RAMAN");
Calculate.base_url = "https://vedastro.zaishi.net/api/Calculate";
const location = new GeoLocation("Bangalore", 77.5833, 12.9667);
const birthTime = new Time("14:20 16/10/1918 +05:30", location);
const result = await Calculate.CheckDasaSystemApplicability(birthTime);
console.log(JSON.stringify(result, null, 2));

Dart SDK example

import 'dart:convert';
import 'package:vedastro/vedastro.dart';

Future<void> main() async {
  final client = VedAstroClient(apiKey: 'FreeAPIUser',
    baseUrl: 'https://vedastro.zaishi.net/api/Calculate', defaultAyanamsa: Ayanamsa.raman);
  try {
    final location = GeoLocation.of('Bangalore', 77.5833, 12.9667);
    final birthTime = Time.of("14:20 16/10/1918 +05:30", location);
    final result = await client.calculate().checkDasaSystemApplicability(birthTime);
    print(const JsonEncoder.withIndent("  ").convert(result));
  } finally {
    client.close();
  }
}

Go SDK example

package main

import (
 "context"
 "encoding/json"
 "fmt"
 vedastro "github.com/VedAstro/VedAstro.Go"
)

func main() {
    client := vedastro.NewClient("FreeAPIUser",
        vedastro.WithBaseURL("https://vedastro.zaishi.net/api/Calculate"),
        vedastro.WithDefaultAyanamsa(vedastro.AyanamsaRaman))
    location := vedastro.NewGeoLocation("Bangalore", 77.5833, 12.9667)
    birthTime, err := vedastro.NewTime("14:20 16/10/1918 +05:30", location)
    if err != nil { panic(err) }
    result, err := client.CheckDasaSystemApplicability(context.Background(), birthTime)
    if err != nil { panic(err) }
    data, err := json.MarshalIndent(result, "", "  ")
    if err != nil { panic(err) }
    fmt.Println(string(data))
}

Java SDK example

import java.util.List;
import org.vedastro.*;
import org.vedastro.calculate.*;

class DasaExample {
    public static void main(String[] args) {
        var client = VedAstroClient.builder().apiKey("FreeAPIUser")
            .baseUrl("https://vedastro.zaishi.net/api/Calculate")
            .defaultAyanamsa(Ayanamsa.RAMAN).build();
        var location = GeoLocation.of("Bangalore", 77.5833, 12.9667);
        var birthTime = Time.of("14:20 16/10/1918 +05:30", location);
        var result = client.calculate().checkDasaSystemApplicability(birthTime);
        System.out.println(Json.encode(result));
    }
}

Complete recorded request and response

{
  "capturedOn": "2026-10-26",
  "endpoint": "CheckDasaSystemApplicability",
  "request": {
    "birthTime": {
      "StdTime": "14:20 16/10/1918 +05:30",
      "Location": {
        "Name": "Bangalore",
        "Longitude": 77.5833,
        "Latitude": 12.9667
      }
    },
    "Ayanamsa": "RAMAN",
    "APIKey": "FreeAPIUser"
  },
  "response": {
    "Status": "Pass",
    "Input": {
      "CalculatorName": "CheckDasaSystemApplicability",
      "Type": "SingleCall",
      "Ayanamsa": 3,
      "Parameters": [
        {
          "Name": "birthTime",
          "Type": "Time",
          "Value": {
            "StdTime": "14:20 16/10/1918 +05:30",
            "Location": {
              "Name": "Bangalore",
              "Longitude": 77.5833,
              "Latitude": 12.9667
            }
          }
        }
      ]
    },
    "Payload": {
      "CheckDasaSystemApplicability": {
        "Systems": [
          {
            "System": "Vimshottari",
            "Name": "Vimshottari",
            "Group": "Vimshottari",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable to all charts.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "VimshottariJanma",
            "Name": "Vimshottari Janma",
            "Group": "Vimshottari",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable to all charts.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "Fixed360Days",
            "DefinesSubperiods": true
          },
          {
            "System": "VimshottariLagna",
            "Name": "Vimshottari Lagna",
            "Group": "Vimshottari",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable to all charts.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "VimshottariUtpanna",
            "Name": "Vimshottari Utpanna",
            "Group": "Vimshottari",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable to all charts.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "VimshottariKshema",
            "Name": "Vimshottari Kshema",
            "Group": "Vimshottari",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable to all charts.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "VimshottariAdhana",
            "Name": "Vimshottari Adhana",
            "Group": "Vimshottari",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable to all charts.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Ashtottari",
            "Name": "Ashtottari",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "Rahu in a quadrant or trine from the Lagna lord (not in Lagna), with birth in Sukla Paksha at night or Krishna Paksha in the day",
            "LifeSpanYears": 108.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Shodshottari",
            "Name": "Shodshottari",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": true,
            "ApplicabilityReason": "Birth in Sukla Paksha with Lagna in Sun's Hora, or Krishna Paksha with Lagna in Moon's Hora",
            "LifeSpanYears": 116.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Dvadashottari",
            "Name": "Dvadashottari",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "Lagna in Sukramsa (same sign as Venus occupies in Navamsa)",
            "LifeSpanYears": 112.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Panchottari",
            "Name": "Panchottari",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "Lagna in Cancer Rasi and Cancer Dwadasamsa (0 to 2 deg 30 min Cancer)",
            "LifeSpanYears": 105.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Satabdika",
            "Name": "Satabdika",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "Vargottama Lagna (same sign in Rasi and Navamsa)",
            "LifeSpanYears": 100.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "ChaturashitiSama",
            "Name": "Chaturashiti Sama",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "10th lord placed in the 10th house (Karma Yogi)",
            "LifeSpanYears": 84.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "DwisaptatiSama",
            "Name": "Dwisaptati Sama",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "Lagna lord in the 7th house or 7th lord in Lagna",
            "LifeSpanYears": 72.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Shastihayani",
            "Name": "Shastihayani",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": false,
            "ApplicabilityReason": "Sun placed in Lagna",
            "LifeSpanYears": 60.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "ShattrimshatSama",
            "Name": "Shattrimshat Sama",
            "Group": "Conditional",
            "Purpose": "Special",
            "IsApplicable": true,
            "ApplicabilityReason": "Day birth with Lagna in Sun's Hora, or night birth with Lagna in Moon's Hora",
            "LifeSpanYears": 36.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Tara",
            "Name": "Tara",
            "Group": "Derived",
            "Purpose": "Natal",
            "IsApplicable": false,
            "ApplicabilityReason": "At least one planet in each of the four quadrants from Lagna (Rath 6.1.1).",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "TribhagiVimshottari",
            "Name": "Tribhagi Vimshottari",
            "Group": "Derived",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable; three 40-year cycles.",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "TithiAshtottari",
            "Name": "Tithi Ashtottari",
            "Group": "Conditional",
            "Purpose": "Annual",
            "IsApplicable": true,
            "ApplicabilityReason": "Universally applicable in Rath's account, including annual charts.",
            "LifeSpanYears": 108.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Moola",
            "Name": "Moola",
            "Group": "Derived",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Applicable to all charts (Rath 6.2).",
            "LifeSpanYears": 120.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": false
          },
          {
            "System": "Narayana",
            "Name": "Narayana",
            "Group": "SignBased",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Applicable to all charts.",
            "LifeSpanYears": 144.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Shoola",
            "Name": "Shoola",
            "Group": "SignBased",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Applicable to all charts.",
            "LifeSpanYears": 108.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Sudarsana",
            "Name": "Sudarsana",
            "Group": "SignBased",
            "Purpose": "Annual",
            "IsApplicable": true,
            "ApplicabilityReason": "Applicable to all charts.",
            "LifeSpanYears": 12.0,
            "DefaultYearConvention": "TrueSiderealSolar",
            "DefinesSubperiods": true
          },
          {
            "System": "Chara",
            "Name": "Chara",
            "Group": "SignBased",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Applicable to all charts.",
            "LifeSpanYears": null,
            "DefaultYearConvention": "MeanTropical",
            "DefinesSubperiods": true
          },
          {
            "System": "Kalachakra",
            "Name": "Kalachakra",
            "Group": "SignBased",
            "Purpose": "Natal",
            "IsApplicable": true,
            "ApplicabilityReason": "Applicable to all charts.",
            "LifeSpanYears": null,
            "DefaultYearConvention": "MeanTropical",
            "DefinesSubperiods": true
          }
        ],
        "PreferredSpecialDasa": "Shodshottari"
      }
    }
  }
}

Questions about Shastihayani

When should I choose Shastihayani?

Sun placed in Lagna

How is the first period selected?

The occupied longitude group selects Jupiter, Sun, Mars, Moon, Mercury, Venus, Saturn or Rahu. The groups preserve the source boundaries, including the shortened and extended segments around Abhijit.

Can I request every subdivision?

Request depth 1–8; the response includes only levels defined by this system. Use a date query for deep detail without generating a whole-life expansion.

Which clock and options does this system use?

The default is TrueSiderealSolar. Ayanamsa controls zodiac positions, while DasaOptions.YearConvention controls durations. No additional system-specific option is required for the default calculation.

Explore another system

Ashtottari Shodshottari Dvadashottari

Back to the complete Dasa API guide →