Namedays Calendar vs The Colony

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

Uptime · 30d
Uptime · 90d91.2%100%
Uptime · 30d85.0%100%
P50 · ms480567
P95 · ms27493254
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key may be required for production
Rate limit60 req/window · 58 remainingUnpublished
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 91.2% versus The Colony at 100% 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, Namedays Calendar or The Colony?

Namedays Calendar has the lower median latency in our checks — Namedays Calendar responds in 480 ms versus The Colony at 567 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 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?

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

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.