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Namedays Calendar vs The Colony

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

APINamedays CalendarNEW—The ColonyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Namedays Calendar vs The Colony: common questions

Which is more reliable, Namedays Calendar or The Colony?

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

Do Namedays Calendar and The Colony need an API key?

Namedays Calendar needs no key, while The Colony requires a free API key. If you want to start calling without signup, reach for Namedays Calendar first.

Can I call Namedays Calendar and The Colony from the browser?

Only Namedays Calendar is browser-friendly — it returns CORS headers over HTTPS. The Colony needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Namedays Calendar and The Colony free for commercial use?

Namedays Calendar has unclear commercial terms, and The Colony 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.