caldays vs UK Bank Holidays
Same instrument, two spec sheets — measured, not claimed.
caldays vs UK Bank Holidays: common questions
Which is more reliable, caldays or UK Bank Holidays?
Both are neck-and-neck — caldays and UK Bank Holidays each measure 100% 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, caldays or UK Bank Holidays?
caldays has the lower median latency in our checks — caldays responds in 149 ms versus UK Bank Holidays at 221 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 caldays and UK Bank Holidays need an API key?
Neither needs a paid key — caldays is callable with no signup, and UK Bank Holidays is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call caldays and UK Bank Holidays from the browser?
Yes — both caldays and UK Bank Holidays 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 caldays and UK Bank Holidays free for commercial use?
caldays has unclear commercial terms, and UK Bank Holidays 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.