Hindu festival calendar

Compute all major Hindu festival dates for a given year and location. Returns 20 pan-Hindu festivals including solar sankrantis (Makar Sankranti, Vaisakhi) and tithi-based festivals (Diwali, Holi, Dussehra, Janmashtami, Ganesh Chaturthi, Ram Navami, and 12 others). All dates are astronomically computed — no hardcoded dates. Tithi festivals use the Sun-Moon elongation at local sunrise with Lahiri sidereal ayanamsa. Location is required for accurate sunrise-based tithi determination.

Endpoint

GET /v1/astro/panchanga/festivals

Request parameters

Field	Type	Required	Description
year	integer	Yes	Calendar year
location	string \| null	No	City name
latitude	number \| null	No
longitude	number \| null	No
timezone	string \| null	No	IANA timezone

Example request

curl
Python
TypeScript

curl -X GET "https://api.asterwise.com/v1/astro/panchanga/festivals?year=2026&latitude=28.6139&longitude=77.209&timezone=Asia%2FKolkata" \
  -H "Authorization: Bearer YOUR_API_KEY"

import asterwise
from asterwise.api.astrology_api import AstrologyApi

configuration = asterwise.Configuration(
    host="https://api.asterwise.com",
    access_token="YOUR_API_KEY",
)

with asterwise.ApiClient(configuration) as client:
    api = AstrologyApi(client)
    result = api.panchanga_festivals(year=2026,
    latitude=28.6139,
    longitude=77.209,
    timezone="Asia/Kolkata")
    print(result)

import { createClient, createConfig, panchangaFestivals } from 'asterwise';

const client = createClient(createConfig({
  baseUrl: 'https://api.asterwise.com',
  headers: { Authorization: 'Bearer YOUR_API_KEY' },
}));

const result = await panchangaFestivals({
  client,
  query: {
      "year": 2026,
      "latitude": 28.6139,
      "longitude": 77.209,
      "timezone": "Asia/Kolkata"
  },
});

console.log(result.data);

Example response

{
  "success": true,
  "message": "success",
  "data": {
    "year": 2026,
    "timezone": "Asia/Kolkata",
    "total": 20,
    "festivals": [
      {
        "name": "Makar Sankranti",
        "date": "2026-01-14",
        "type": "solar",
        "description": "Sun's sidereal transit into Makara (Capricorn). Marks the start of Uttarayana — the northward journey of the Sun.",
        "significance": "Harvest festival. Uttarayana begins. Associated with kite flying, sesame sweets (til-gul), and holy dips in rivers. Know…"
      },
      {
        "name": "Maha Shivaratri",
        "date": "2026-02-16",
        "type": "tithi",
        "description": "Krishna Paksha Chaturdashi of Magha or Phalguna month. The great night of Shiva.",
        "significance": "Night-long vigil and fasting dedicated to Lord Shiva. Most auspicious night of the year for Shiva worship."
      },
      "... and 18 more items"
    ]
  }
}

Response fields

Field	Type	Description
success	boolean	True if the request succeeded
message	string	Human-readable status message
data	object
data.year	integer	Calendar year for which festivals are computed.
data.timezone	string	IANA timezone used for sunrise-based tithi calculations.
data.total	integer	Total number of festivals found.
data.festivals	array[object]	Festivals sorted chronologically by date.
data.festivals[].name	string	Festival name.
data.festivals[].date	string	Festival date in YYYY-MM-DD format.
data.festivals[].type	string	Festival type: 'solar' (sankranti-based) or 'tithi' (lunar day-based).
data.festivals[].description	string	Classical basis for the festival date (tithi or sankranti).
data.festivals[].significance	string	Cultural and religious significance.

Errors

Code	Description	Reference
authentication_failed	Missing or invalid API key.	authentication_failed
ephemeris_unavailable	Upstream ephemeris service error.	ephemeris_unavailable
insufficient_tier	API key tier does not include this endpoint.	insufficient_tier
internal_error	Unexpected server error.	internal_error
ip_rate_limit_exceeded	Too many requests in a short window.	ip_rate_limit_exceeded
payload_too_large	Request body exceeds the size limit.	payload_too_large
resource_not_found	Referenced resource was not found.	resource_not_found
validation_error	Request body failed schema validation.	validation_error

Endpoint​

Request parameters​

Example request​

Example response​

Response fields​

Errors​

Related endpoints​