Amavasya Dates

Endpoint POST https://starsapi.com/api/v3/vedic/panchang/amavasya

Returns the month's Amavasya (new moon) dates with both reckonings: the Darsha Amavasya (astronomical new moon — the date used for Darsha Shraddha and Pitru Tarpan) and the Udaya-Tithi observance date (sunrise rule with Vriddhi/Kshaya handling). The two often differ — the sample shows new moon on June 14 with observance on June 15 — and dates_differ flags exactly that. Each entry carries its festival identity, adhik flag, Hindu month in both systems, and the full tithi window.

Authentication

Method	Example
Header (recommended)	`X-Api-Key: am_live_xxxxxxxxxxxx`
Bearer	`Authorization: Bearer am_live_xxxxxxxxxxxx`
Query	`?api_key=am_live_xxxxxxxxxxxx`

Request body

Field	Type	Required	Description
`year`	integer	Yes	Calendar year.
`month`	integer	Yes	Month, 1–12 — the list is filtered to this month; `summary` and `next` still consider the whole year.
`latitude`	number	Yes	Decimal degrees.
`longitude`	number	Yes	Decimal degrees.
`timezone`	string	Yes	IANA timezone (e.g. `Asia/Kolkata`).

Response shape

Field	Type	Description
`amavasyas[]`	array	Per entry: `name` + Hindi, `alt_name`/`significance`, `is_adhik`, `hindu_month` (both systems), `darsha_amavasya` (astronomical date + new-moon time), `udaya_tithi` (observance date, tithi type, sunrise count), `dates_differ`, `tithi_window`.
`next`	object	The next upcoming Amavasya from today (same shape).

Errors

HTTP	Code	Cause
400	`MISSING_FIELD`	Required field absent.
400	`INVALID_DATE`	Bad year/month.
400	`INVALID_TIMEZONE`	Non-IANA timezone.
400	`INVALID_COORDINATE`	Lat/lon out of range.
405	`METHOD_NOT_ALLOWED`	Non-POST request.

# Replace YOUR_API_KEY with the key from your dashboard
curl -X POST "https://starsapi.com/api/v3/vedic/panchang/amavasya" \
  -H "X-Api-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
        "year": 2026,
        "month": 6,
        "latitude": 28.6139,
        "longitude": 77.209,
        "timezone": "Asia/Kolkata"
    }'

const response = await fetch(
  'https://starsapi.com/api/v3/vedic/panchang/amavasya',
  {
    method: 'POST',
    headers: {
      'X-Api-Key': 'YOUR_API_KEY',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      year: 2026,
      month: 6,
      latitude: 28.6139,
      longitude: 77.209,
      timezone: 'Asia/Kolkata'
    })
  }
);
const result = await response.json();

if (result.success) {
  console.log(result.data);
}

import requests
import os

response = requests.post(
    'https://starsapi.com/api/v3/vedic/panchang/amavasya',
    headers={'X-Api-Key': os.environ['STARSAPI_KEY']},
    json={
        'year': 2026,
        'month': 6,
        'latitude': 28.6139,
        'longitude': 77.209,
        'timezone': 'Asia/Kolkata'
    }
)
result = response.json()

if result['success']:
    print(result['data'])

<?php
$payload = [
    'year' => 2026,
    'month' => 6,
    'latitude' => 28.6139,
    'longitude' => 77.209,
    'timezone' => 'Asia/Kolkata',
];

$ch = curl_init('https://starsapi.com/api/v3/vedic/panchang/amavasya');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'X-Api-Key: ' . getenv('STARSAPI_KEY'),
    'Content-Type: application/json'
]);

$response = curl_exec($ch);
$data = json_decode($response, true);

if ($data['success']) {
    print_r($data['data']);
}

import 'package:http/http.dart' as http;
import 'dart:convert';

Future<Map<String, dynamic>> getAscendant() async {
  final response = await http.post(
    Uri.parse('https://starsapi.com/api/v3/vedic/panchang/amavasya'),
    headers: {
      'X-Api-Key': 'YOUR_API_KEY',
      'Content-Type': 'application/json',
    },
    body: jsonEncode({
      'year': 2026,
      'month': 6,
      'latitude': 28.6139,
      'longitude': 77.209,
      'timezone': 'Asia/Kolkata',
    }),
  );
  return jsonDecode(response.body);
}

import Foundation

func getAscendant() async throws -> [String: Any] {
    var request = URLRequest(url: URL(string:
        "https://starsapi.com/api/v3/vedic/panchang/amavasya"
    )!)
    request.httpMethod = "POST"
    request.setValue("YOUR_API_KEY", forHTTPHeaderField: "X-Api-Key")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    request.httpBody = """
        {
            "year": 2026,
            "month": 6,
            "latitude": 28.6139,
            "longitude": 77.209,
            "timezone": "Asia/Kolkata"
        }
        """.data(using: .utf8)

    let (data, _) = try await URLSession.shared.data(for: request)
    return try JSONSerialization.jsonObject(with: data) as! [String: Any]
}

import okhttp3.*
import org.json.JSONObject

val client = OkHttpClient()
val JSON = "application/json; charset=utf-8".toMediaType()

fun getAscendant(callback: (JSONObject) -> Unit) {
    val payload = """
    {
        "year": 2026,
        "month": 6,
        "latitude": 28.6139,
        "longitude": 77.209,
        "timezone": "Asia/Kolkata"
    }
    """.trimIndent()

    val request = Request.Builder()
        .url("https://starsapi.com/api/v3/vedic/panchang/amavasya")
        .addHeader("X-Api-Key", "YOUR_API_KEY")
        .post(payload.toRequestBody(JSON))
        .build()

    client.newCall(request).enqueue(object : Callback {
        override fun onResponse(call: Call, response: Response) {
            callback(JSONObject(response.body!!.string()))
        }
        override fun onFailure(call: Call, e: java.io.IOException) {
            e.printStackTrace()
        }
    })
}

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "net/http"
    "os"
)

func main() {
    payload, _ := json.Marshal(map[string]interface{}{
        "year": 2026,
        "month": 6,
        "latitude": 28.6139,
        "longitude": 77.209,
        "timezone": "Asia/Kolkata",
    })

    req, _ := http.NewRequest("POST",
        "https://starsapi.com/api/v3/vedic/panchang/amavasya",
        bytes.NewBuffer(payload))
    req.Header.Set("X-Api-Key", os.Getenv("STARSAPI_KEY"))
    req.Header.Set("Content-Type", "application/json")

    resp, _ := http.DefaultClient.Do(req)
    defer resp.Body.Close()

    var result map[string]interface{}
    json.NewDecoder(resp.Body).Decode(&result)
    fmt.Println(result["data"])
}

require 'net/http'
require 'json'

uri = URI('https://starsapi.com/api/v3/vedic/panchang/amavasya')
payload = {
  'year' => 2026,
  'month' => 6,
  'latitude' => 28.6139,
  'longitude' => 77.209,
  'timezone' => 'Asia/Kolkata'
}

req = Net::HTTP::Post.new(uri)
req['X-Api-Key'] = ENV['STARSAPI_KEY']
req['Content-Type'] = 'application/json'
req.body = payload.to_json

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
res = http.request(req)

data = JSON.parse(res.body)
puts data['data'] if data['success']

200 RESPONSE

{
  "status": 200,
  "success": true,
  "data": {
    "year": 2026,
    "month": 6,
    "maas_system": "purnimant",
    "summary": { "total_amavasyas": 12 },
    "next": { "name": "Adhik Jyeshtha Amavasya", "alt_name": "Vat Savitri Amavasya" },
    "total_count": 1,
    "amavasyas": [
      {
        "name": "Adhik Jyeshtha Amavasya",
        "name_hindi": "\u0905\u0927\u093f\u0915 \u091c\u094d\u092f\u0947\u0937\u094d\u0920 \u0905\u092e\u093e\u0935\u0938\u094d\u092f\u093e",
        "alt_name": "Vat Savitri Amavasya",
        "significance": "Vat Savitri Vrat (South India tradition); Shani Jayanti some years",
        "is_adhik": true,
        "hindu_month": { "purnimant": "Adhik Jyeshtha", "amant": "Adhik Jyeshtha" },
        "darsha_amavasya": {
          "date": "2026-06-14",
          "newmoon_time": "22:22:12",
          "description": "Astronomical new moon \u2014 Amavasya tithi midpoint date. Used for Darsha Shraddha and Pitru Tarpan timing."
        },
        "udaya_tithi": {
          "date": "2026-06-15",
          "tithi_type": "normal",
          "sunrises_in_amavasya": 1,
          "description": "Amavasya tithi present at sunrise (Udaya Tithi) \u2014 standard observance date."
        },
        "dates_differ": true,
        "tithi_window": {
          "start": "2026-06-14 12:20:13",
          "end": "2026-06-15 08:24:10",
          "duration_hours": 20.07
        }
      }
    ]
  },
  "meta": { "endpoint": "/api/v3/vedic/panchang/amavasya", "version": "3.0" }
}