Calendar · head-to-head
Church Calendar vs The Calendar
Church Calendar (calapi) serves the daily Roman Catholic liturgical calendar — season, week, feast rank, and liturgical color — for a given date and country-specific calendar variant, in English, Czech, Latin, or Spanish. It's a small keyless JSON API maintained by a Czech developer alongside the printed liturgical calendars he publishes. There's no pricing or account system of any kind; the only quirk is that its real backend still only serves plain HTTP, timing out on HTTPS.
The Calendar publishes pre-generated, static JSON (and downloadable .ics) files for US federal and all-50-state holidays (2025–2028), 30 countries' public holidays, plus FOMC meeting dates, US tax deadlines, market holidays, and key-date calendars for a dozen sports leagues. Every one of its 99 documented endpoints is a flat file behind Cloudflare, so there's no authentication, no rate limit, and CORS is wide open — licensed CC BY 4.0 as long as you link back.
| Church Calendar | The Calendar | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON | JSON, ICS |
| CORS | yes | yes |
| HTTPS | No | Yes |
The Calendar supports 2 response formats, while Church Calendar offers fewer — pick The Calendar for more integration flexibility.