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Satellite Passes vs USGS Earthquake Hazards Program

Same instrument, two spec sheets — measured, not claimed.

APISatellite PassesHEALTHY84USGS Earthquake Hazards ProgramHEALTHY91
Uptime · 30d
Uptime · 90d99.02%99.02%
Uptime · 30d98.3%100%
P50 · ms976549
P95 · ms32431638
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (U.S. Government work)
Free tierFree — limits not publishedFree — no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Satellite Passes vs USGS Earthquake Hazards Program: common questions

Which is more reliable, Satellite Passes or USGS Earthquake Hazards Program?

Both are neck-and-neck — Satellite Passes and USGS Earthquake Hazards Program each measure 99.02% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Satellite Passes or USGS Earthquake Hazards Program?

USGS Earthquake Hazards Program has the lower median latency in our checks — Satellite Passes responds in 976 ms versus USGS Earthquake Hazards Program at 549 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Satellite Passes and USGS Earthquake Hazards Program need an API key?

Neither needs a paid key — Satellite Passes is callable with no signup, and USGS Earthquake Hazards Program is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Satellite Passes and USGS Earthquake Hazards Program from the browser?

Yes — both Satellite Passes and USGS Earthquake Hazards Program send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Satellite Passes and USGS Earthquake Hazards Program free for commercial use?

Satellite Passes has unclear commercial terms, and USGS Earthquake Hazards Program allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.