Official API Platform · 2.0.0

Astronomy APIs built for research and products.

One production catalogue for solar, lunar, eclipse, sky-observation, Sindhu Sambat, Hijri, terminology and scientific-validation services.

Explore 35 APIs Read documentation OpenAPI 3.1

No API keyJSON over HTTPSCloudflare edge cacheMachine-readable freshness

GET /api/system-health.php

{
  "success": true,
  "status": "healthy",
  "checks": {
    "api": "ok",
    "live_sky_snapshot": "fresh",
    "reference_snapshot": "fresh"
  }
}

ProductionOpen live response →

35Public JSON APIs

8Service categories

3.1OpenAPI contract

CC BY 4.0Open-data license

Start building

Everything a developer needs

Discovery, documentation, live testing and machine-readable contracts share the same 35-endpoint registry.

Interactive Explorer

Filter endpoints, set parameters, run real requests and inspect formatted JSON without leaving the portal.

Launch Explorer → 02

Documentation

Parameters, examples, caching, errors, freshness and integration conventions for every endpoint.

Read docs → 03

OpenAPI 3.1

Import the complete machine contract into Postman, Insomnia, Swagger UI or code generators.

Open JSON → 04

API Directory

Lightweight endpoint discovery metadata for AI agents, applications and documentation pipelines.

Open directory →

Catalogue

35 endpoints. One source of truth.

Browse all endpoints

6 APIs

Platform & Integration

Discovery, health, daily public feeds and integrated observatory payloads.

Explore →

4 APIs

Solar & Seasons

Sun position, daylight, equinox and Sindhi season calculations.

Explore →

5 APIs

Lunar

Moon position, illumination, rise/set, validation and live geometry.

Explore →

8 APIs

Calendars & Time

Sindhu Sambat, Hijri, conversion, pahar, almanac and audit services.

Explore →

6 APIs

Sky & Observation

Observer sky, planets, simulation, geodata and AR-ready catalogues.

Explore →

2 APIs

Eclipses

Archive and location-aware eclipse visibility services.

Explore →

3 APIs

Validation & Reference

Reference datasets, comparisons and multi-year validation reports.

Explore →

1 APIs

Language & Terminology

Sindhi astronomical glossary and machine-readable knowledge fields.

Explore →

Quick start

A request in seconds

All public endpoints use HTTPS GET and return JSON.

curl -sS "https://astro.sindhilanguage.org/api/almanac.php?date=today&lat=25.396&lon=68.3578&timezone=Asia/Karachi"

const response = await fetch("https://astro.sindhilanguage.org/api/almanac.php?date=today&lat=25.396&lon=68.3578&timezone=Asia/Karachi");
const data = await response.json();

import requests

data = requests.get(
    "https://astro.sindhilanguage.org/api/almanac.php",
    params={"date":"today","lat":25.396,"lon":68.3578,"timezone":"Asia/Karachi"},
    timeout=20,
).json()

Freshness first

Date-bearing responses publish validity metadata and reject stale live payloads.

Edge-efficient

ETag, Cache-Control and Cloudflare caching reduce shared-hosting origin load.

Research transparent

Stable, Research and Validation maturity labels distinguish operational status.

Ready

Choose an endpoint and ship.

Use the Explorer for live testing or import the OpenAPI contract into your existing workflow.

Open Explorer Download OpenAPI