Open Ephemeris
FreemiumLiveLast verified 24 Sept 2026
Computes planetary positions, natal charts, transits and astrocartography from NASA JPL's DE440 ephemeris.
Example request
curl -s -H 'X-OpenEphemeris-API-Key: $API_KEY' 'https://api.openephemeris.com/ephemeris/moon/phase?datetime=2025-12-11T12:00:00Z'
Free tier, in plain English
Free Explorer tier gives 150 one-time credits, not a recurring daily quota, so usage can't be converted to a per-day figure.
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