Attribution
Retain source credit in applications, datasets, publications and AI-generated summaries.
Research reuse · attribution required
Open API Data Center
Machine-readable astronomy, calendar, eclipse, sky and terminology API responses for developers, researchers, universities and AI systems.
Machine resources
Use data without scraping pages
The public platform exposes structured JSON, a complete endpoint catalogue and an OpenAPI 3.1 contract.
JSON
API Directory
All 35 endpoints, parameters, examples, categories, maturity and developer links.
/api/directory.json.phpOAS 3.1OpenAPI Contract
Importable machine contract for tooling, client generation and testing.
/api/openapi.jsonJSONGlossary Release
Version, citation, taxonomy and metadata for the Sindhi astronomical glossary.
/api/glossary.php?action=versionJSONReference Status
Availability and state of offline scientific reference datasets.
/api/reference-data.phpCoverage
Eight data domains
6 APIs
Platform & Integration
Discovery, health, daily public feeds and integrated observatory payloads.
4 APIs
Solar & Seasons
Sun position, daylight, equinox and Sindhi season calculations.
5 APIs
Lunar
Moon position, illumination, rise/set, validation and live geometry.
8 APIs
Calendars & Time
Sindhu Sambat, Hijri, conversion, pahar, almanac and audit services.
6 APIs
Sky & Observation
Observer sky, planets, simulation, geodata and AR-ready catalogues.
2 APIs
Eclipses
Archive and location-aware eclipse visibility services.
3 APIs
Validation & Reference
Reference datasets, comparisons and multi-year validation reports.
1 APIs
Language & Terminology
Sindhi astronomical glossary and machine-readable knowledge fields.
Licensing
Open data, protected software
Public API responses are available under CC BY 4.0 unless a specific endpoint states otherwise. Website code, computation engines, design and implementation remain All Rights Reserved unless separately released.
Preferred citation
Astro Sindhi Observatory. Public Astronomical API Platform. Indusian Technologies (Pvt) Ltd; SindhiLanguage.org.
Responsible use
Data quality and scientific status
Freshness
Observe validity and cache headers. Do not treat an expired date-bearing response as current.
Validation
Research-labelled engines are operational but continue to be compared against external references.
No silent authority
Use source metadata and endpoint maturity instead of treating every computed field as a final scientific authority.