# openephemeris-com Time Conversion API

**Canonical:** https://apis.io/apis/openephemeris-com/openephemeris-com-time-conversion-api/  
**Provider:** openephemeris-com — https://apis.io/providers/openephemeris-com/  
**Base URL:** https://api.openephemeris.com  
**Documentation:** https://openephemeris.com/docs

openephemeris-com Time Conversion API is one of 20 APIs that [openephemeris-com](https://apis.io/providers/openephemeris-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. Tagged areas include Time Conversion. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

Convert between time formats. Julian Day numbers, sidereal time, sunrise/sunset. **1 unit per request.**

## Operations (6)

| Method | Path | Summary |
|---|---|---|
| GET | `/time/delta-t` | Delta T (TT-UT1) calculation |
| GET | `/time/equation-of-time` | Equation of Time |
| POST | `/time/julian-day` | Calendar conversion to Julian Day Number |
| POST | `/time/scales` | Time Scale Conversions |
| GET | `/time/sidereal` | Sidereal Time (LAST & GMST) |
| GET | `/time/solar-event` | Solar Events (Sunrise/Sunset/Transit) |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/openephemeris-com/openapi/openephemeris-com-time-conversion-api-openapi.yml
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-acgccgrequest-payload-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-acgrequest-payload-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-vedic-chart-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/openephemeris-com/json-schema/openephemeris-com-acglocal-space-request-payload-schema.json

## Other openephemeris-com APIs (12)

- [openephemeris-com ACG API](https://apis.io/apis/openephemeris-com/openephemeris-com-acg-api/)
- [openephemeris-com Agricultural API](https://apis.io/apis/openephemeris-com/openephemeris-com-agricultural-api/)
- [openephemeris-com API Metadata API](https://apis.io/apis/openephemeris-com/openephemeris-com-api-metadata-api/)
- [openephemeris-com Calendar API](https://apis.io/apis/openephemeris-com/openephemeris-com-calendar-api/)
- [openephemeris-com Catalogs API](https://apis.io/apis/openephemeris-com/openephemeris-com-catalogs-api/)
- [openephemeris-com Chinese API](https://apis.io/apis/openephemeris-com/openephemeris-com-chinese-api/)
- [openephemeris-com Comparative API](https://apis.io/apis/openephemeris-com/openephemeris-com-comparative-api/)
- [openephemeris-com Eclipse API](https://apis.io/apis/openephemeris-com/openephemeris-com-eclipse-api/)
- [openephemeris-com Electional API](https://apis.io/apis/openephemeris-com/openephemeris-com-electional-api/)
- [openephemeris-com Ephemeris API](https://apis.io/apis/openephemeris-com/openephemeris-com-ephemeris-api/)
- [openephemeris-com Health API](https://apis.io/apis/openephemeris-com/openephemeris-com-health-api/)
- [openephemeris-com Human Design API](https://apis.io/apis/openephemeris-com/openephemeris-com-human-design-api/)

## Tags

Time Conversion

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/openephemeris-com/openephemeris-com-time-conversion-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/openephemeris-com/.