Compatibility: Dasha (concurrent Vimshottari)

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POST

/vedic/compatibility/dasha

curl -X POST https://api.astroway.info/v1/vedic/compatibility/dasha \
  -H "X-Api-Key: aw_live_..." \
  -H "Content-Type: application/json" \
  -d '{ "chart1": { "date": "1990-05-15", "time": "15:30:00", "timezone": "Europe/Kyiv", "latitude": 50.45, "longitude": 30.52 }, "chart2": { "date": "1985-11-03", "time": "09:15:00", "timezone": "Europe/Kyiv", "latitude": 48.46, "longitude": 35.04 }, "fromDate": "2026-11-01", "years": 2 }'

const res = await fetch('https://api.astroway.info/v1/vedic/compatibility/dasha', {
  method: 'POST',
  headers: {
    'X-Api-Key': process.env.ASTROWAY_API_KEY,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "chart1": {
      "date": "1990-05-15",
      "time": "15:30:00",
      "timezone": "Europe/Kyiv",
      "latitude": 50.45,
      "longitude": 30.52
    },
    "chart2": {
      "date": "1985-11-03",
      "time": "09:15:00",
      "timezone": "Europe/Kyiv",
      "latitude": 48.46,
      "longitude": 35.04
    },
    "fromDate": "2026-11-01",
    "years": 2
  }),
});
const { ok, data, error } = await res.json();
if (!ok) throw new Error(error.message);
console.log(data);

import os, requests

r = requests.post(
    'https://api.astroway.info/v1/vedic/compatibility/dasha',
    headers={'X-Api-Key': os.environ['ASTROWAY_API_KEY'], 'Content-Type': 'application/json'},
    json={
      'chart1': {
        'date': "1990-05-15",
        'time': "15:30:00",
        'timezone': "Europe/Kyiv",
        'latitude': 50.45,
        'longitude': 30.52
      },
      'chart2': {
        'date': "1985-11-03",
        'time': "09:15:00",
        'timezone': "Europe/Kyiv",
        'latitude': 48.46,
        'longitude': 35.04
      },
      'fromDate': "2026-11-01",
      'years': 2
    },
)
result = r.json()
if not result['ok']:
    raise RuntimeError(result['error']['message'])
print(result['data'])

<?php
use GuzzleHttp\Client;

$client = new Client(['base_uri' => 'https://api.astroway.info/v1/']);
$r = $client->post('vedic/compatibility/dasha', [
    'headers' => ['X-Api-Key' => getenv('ASTROWAY_API_KEY')],
    'json' => [
        'chart1' => [
            'date' => '1990-05-15',
            'time' => '15:30:00',
            'timezone' => 'Europe/Kyiv',
            'latitude' => 50.45,
            'longitude' => 30.52,
        ],
        'chart2' => [
            'date' => '1985-11-03',
            'time' => '09:15:00',
            'timezone' => 'Europe/Kyiv',
            'latitude' => 48.46,
            'longitude' => 35.04,
        ],
        'fromDate' => '2026-11-01',
        'years' => 2,
    ],
]);
$result = json_decode($r->getBody(), true);
if (!$result['ok']) throw new \RuntimeException($result['error']['message']);
print_r($result['data']);

Vimshottari mahadasha and antardasha of both partners for years (1 to 30, default 10) from fromDate, cut into segments where all four lords are constant, with the natural relation of the lords side by side, the mahadasha changes in the window and the share of the window by relation. No verdict.

Authorizations

ApiKeyAuth

Parameters

Query Parameters

fields

string

Comma-separated dotted paths, relative to data, to keep in the response. A path is applied to every element of an array, so planets.name means the name of each planet. Paths that match nothing come back in _fields_unmatched; a list where nothing matches at all is a 400, because an empty object would be a confident wrong answer.

Example

planets.name,planets.longitude

precision

integer

<= 15

Round every non-integer number in the response to this many decimal places. Integers are left alone, because an id is not a measurement. Ecliptic longitudes ship with fourteen decimals by default; 2 is about a tenth of an arcminute.

Example

Header Parameters

Idempotency-Key

string

>= 1 characters <= 255 characters /^[\x21-\x7E]+$/

Unique per logical operation, kept across retries. For 24 hours from the first request, a repeat with the same key, method, path, body and query string returns the stored response with Idempotent-Replayed: true and costs 0 credits. The same key with a different body or query string is a 409 IDEMPOTENCY_KEY_REUSED; a repeat while the first is still running is a 409 IDEMPOTENCY_IN_PROGRESS. Only 2xx responses are kept. See /idempotency/.

Example

01HXY2A7ZM0ABCDEF

Request Body^required

application/json

Two charts and a window for the concurrent Vimshottari periods of a couple.

object

chart1 required

object

date required

string

/^\d{4}-\d{2}-\d{2}$/

time required

string

/^\d{2}:\d{2}(:\d{2})?$/

timezoneOffset

Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC. Ignored when timezone is sent.

number

0 nullable >= -14 <= 14

timezone

IANA zone name such as Europe/Kyiv, or auto to look the zone up from latitude and longitude. The server takes the offset that zone kept at this local date and time, summer time included, and uses it in place of timezoneOffset. A clock time that happened twice takes the first occurrence; one skipped when clocks went forward takes the offset from before the change. Abbreviations such as EST are refused. Before 1970 the tz database is not reliable for every place, so send timezoneOffset when the local clock is known.

string

latitude required

number

>= -90 <= 90

longitude required

number

>= -180 <= 180

houseSystem

string

default: P

Allowed values: P K R C E W B M O A T V D F G H I i L N Q S U X Y

name

string

city

string

zodiacType

string

Allowed values: tropical sidereal

ayanamsaId

number

nullable

ayanamsa

Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.

string

Allowed values: fagan-bradley lahiri de-luce raman krishnamurti kp yukteshwar jn-bhasin true-citra djwhal-khul

cosmogram

boolean

chart2 required

object

date required

string

/^\d{4}-\d{2}-\d{2}$/

time required

string

/^\d{2}:\d{2}(:\d{2})?$/

timezoneOffset

Hours from UTC at the given moment, not minutes. Fractional zones are hours too: 5.5 for India, 5.75 for Nepal, -3.5 for Newfoundland. Defaults to 0, meaning UTC. Ignored when timezone is sent.

number

0 nullable >= -14 <= 14

timezone

string

latitude required

number

>= -90 <= 90

longitude required

number

>= -180 <= 180

houseSystem

string

default: P

Allowed values: P K R C E W B M O A T V D F G H I i L N Q S U X Y

name

string

city

string

zodiacType

string

Allowed values: tropical sidereal

ayanamsaId

number

nullable

ayanamsa

Sidereal school by name. Lahiri when omitted. Equivalent to ayanamsaId; send either.

string

Allowed values: fagan-bradley lahiri de-luce raman krishnamurti kp yukteshwar jn-bhasin true-citra djwhal-khul

cosmogram

boolean

fromDate

Start of the window, YYYY-MM-DD (UTC). Today when omitted.

string

/^\d{4}-\d{2}-\d{2}$/

years

Length of the window in years, 1 to 30. Default 10.

integer

>= 1 <= 30

Example

{
  "chart1": {
    "date": "1990-05-15",
    "time": "15:30:00",
    "timezone": "Europe/Kyiv",
    "latitude": 50.45,
    "longitude": 30.52
  },
  "chart2": {
    "date": "1985-11-03",
    "time": "09:15:00",
    "timezone": "Europe/Kyiv",
    "latitude": 48.46,
    "longitude": 35.04
  },
  "fromDate": "2026-11-01",
  "years": 2
}

Responses

200

Successful calculation

application/json

object

boolean

data

object

method

string

nullable

system

string

nullable

partner1

string

nullable

partner2

string

nullable

window

object

from

string

nullable

string

nullable

years

number

nullable

segments

Array<object>

nullable

object

start

string

nullable

end

string

nullable

startJd

number

nullable

endJd

number

nullable

partner1

object

maha

string

nullable

antar

string

nullable

partner2

object

maha

string

nullable

antar

string

nullable

maha

object

partner1

string

nullable

partner2

string

nullable

relation

nullable

same

boolean

nullable

antar

object

partner1

string

nullable

partner2

string

nullable

relation

object

p1ToP2

string

nullable

p2ToP1

string

nullable

same

boolean

nullable

mahadashaChanges

Array<object>

nullable

object

partner

number

nullable

date

string

nullable

number

nullable

from

string

nullable

string

nullable

summary

object

segments

number

nullable

mahaRelationShare

object

mutualFriends

number

nullable

mutualEnemies

number

nullable

other

number

nullable

nodes

number

nullable

Example

{
  "ok": true,
  "data": {
    "method": "dasha-compatibility",
    "system": "vimshottari",
    "partner1": "groom",
    "partner2": "bride",
    "window": {
      "from": "2026-11-01",
      "to": "2028-10-31",
      "years": 2
    },
    "segments": [
      {
        "start": "2026-11-01",
        "end": "2027-07-06",
        "startJd": 2461345.5,
        "endJd": 2461593.2010293924,
        "partner1": {
          "maha": "Rahu",
          "antar": "Mars"
        },
        "partner2": {
          "maha": "Mercury",
          "antar": "Venus"
        },
        "maha": {
          "partner1": "Rahu",
          "partner2": "Mercury",
          "relation": null,
          "same": false
        },
        "antar": {
          "partner1": "Mars",
          "partner2": "Venus",
          "relation": {
            "p1ToP2": "N",
            "p2ToP1": "N"
          },
          "same": false
        }
      },
      {
        "start": "2027-07-06",
        "end": "2028-08-16",
        "startJd": 2461593.201029393,
        "endJd": 2462000.2342564114,
        "partner1": {
          "maha": "Jupiter",
          "antar": "Jupiter"
        },
        "partner2": {
          "maha": "Mercury",
          "antar": "Venus"
        },
        "maha": {
          "partner1": "Jupiter",
          "partner2": "Mercury",
          "relation": {
            "p1ToP2": "E",
            "p2ToP1": "N"
          },
          "same": false
        },
        "antar": {
          "partner1": "Jupiter",
          "partner2": "Venus",
          "relation": {
            "p1ToP2": "E",
            "p2ToP1": "N"
          },
          "same": false
        }
      },
      {
        "start": "2028-08-16",
        "end": "2028-10-31",
        "startJd": 2462000.2342564114,
        "endJd": 2462076,
        "partner1": {
          "maha": "Jupiter",
          "antar": "Jupiter"
        },
        "partner2": {
          "maha": "Mercury",
          "antar": "Sun"
        },
        "maha": {
          "partner1": "Jupiter",
          "partner2": "Mercury",
          "relation": {
            "p1ToP2": "E",
            "p2ToP1": "N"
          },
          "same": false
        },
        "antar": {
          "partner1": "Jupiter",
          "partner2": "Sun",
          "relation": {
            "p1ToP2": "F",
            "p2ToP1": "F"
          },
          "same": false
        }
      }
    ],
    "mahadashaChanges": [
      {
        "partner": 1,
        "date": "2027-07-06",
        "jd": 2461593.2010293924,
        "from": "Rahu",
        "to": "Jupiter"
      }
    ],
    "summary": {
      "segments": 3,
      "mahaRelationShare": {
        "mutualFriends": 0,
        "mutualEnemies": 0,
        "other": 0.661,
        "nodes": 0.339
      }
    }
  }
}

400

Validation error

application/json

Example

{
  "ok": false,
  "error": {
    "code": "INVALID_INPUT",
    "message": "Validation failed: date: Date must be YYYY-MM-DD",
    "details": [
      {
        "path": "date",
        "message": "Date must be YYYY-MM-DD"
      }
    ]
  }
}

401

Missing or invalid API key

application/json

Example

{
  "ok": false,
  "error": {
    "code": "INVALID_API_KEY",
    "message": "Invalid API key"
  }
}

Compatibility: Dasha (concurrent Vimshottari)

Authorizations

Parameters

Query Parameters

Example

Example

Header Parameters

Example

Request Body required

Example

Responses

200

Example

400

Example

401

Example

Request Body^required