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Church Calendar vs Public Time API

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

APIChurch CalendarHEALTHY92Public Time APIHEALTHY97
Uptime · 30d
Uptime · 90d100%99.44%
Uptime · 30d100%98.3%
P50 · ms430311
P95 · ms1996449
Authnonenone
CORSyesno
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedRetry-After: 1020s
In directory since2026-07-052026-07-05
operationalpartialdownno data

Church Calendar vs Public Time API: common questions

Which is more reliable, Church Calendar or Public Time API?

On our scheduled checks, Church Calendar leads on measured uptime — Church Calendar at 100% versus Public Time API at 99.44% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Church Calendar or Public Time API?

Public Time API has the lower median latency in our checks — Church Calendar responds in 430 ms versus Public Time API at 311 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 Church Calendar and Public Time API need an API key?

Neither needs a paid key — Church Calendar is callable with no signup, and Public Time API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Church Calendar and Public Time API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Church Calendar and Public Time API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Church Calendar and Public Time API free for commercial use?

Church Calendar has unclear commercial terms, and Public Time API has unclear commercial terms. 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.