Is Open Ephemeris API down?
Current status, daily uptime history and troubleshooting for the Open Ephemeris API (Science & Math).
No, Open Ephemeris is up
Open Ephemeris answered our last daily check (Oct 24, 2026, 12:25 UTC) in 737 ms with HTTP 200.
Checking Open Ephemeris now…
Sending a request from our server.
Open Ephemeris API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- 737 ms · HTTP 200
- Last up
- Now
We check Open Ephemeris's listed URL (https://openephemeris.com/docs) once a day. History started when Open Ephemeris was first checked, so new entries show fewer than 30 days.
Open Ephemeris API not working for you?
- Open Ephemeris needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string.
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- Open Ephemeris doesn't send CORS headers, so browsers block calls made directly from a web page. Call it from your server instead.
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.
Science & Math APIs up at their last check
- 1
GBIF API
Online · 115 msGlobal Biodiversity Information Facility. A free science & math API by gbif.org.
- No API key needed
- Fast: 115 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 2
Macrostrat API
Online · 694 msGeologic maps, rock columns and stratigraphy data.
- No API key needed
- Returns JSON at its URL
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 3
Chempirical API
Online · 533 msChemical compounds with physical data, reactions and substructure search.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
CycleCalcs API
Online · 714 msInterpreted astronomy: sun and moon times, moon phases, planets, eclipses, seasons.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Europe PMC API
Online · 118 msLife-science literature search with abstracts, citations and full-text links.
- No API key needed
- Fast: 118 ms response
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
Compare all Open Ephemeris alternatives · APIs down right now
Open Ephemeris API status FAQ
Is Open Ephemeris API down right now?
Open Ephemeris answered our last daily check (Oct 24, 2026, 12:25 UTC) in 737 ms with HTTP 200. This page also runs a live check from our server when you open it, so you can see whether Open Ephemeris is responding at this moment.
How do you check whether Open Ephemeris API is up?
Once a day our checker requests Open Ephemeris's listed URL (https://openephemeris.com/docs) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.
What can I use if Open Ephemeris API is down?
Free Science & Math APIs that were up at their last check include GBIF, Macrostrat, Chempirical. See the full list of Open Ephemeris alternatives for a comparison.
Why does Open Ephemeris API work for others but not for me?
Open Ephemeris needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string. A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. Open Ephemeris doesn't send CORS headers, so browsers block calls made directly from a web page. Call it from your server instead.