The Church Calendar API provides access to calendar data for any day, allowing users to retrieve various liturgical celebrations and details. It supports multiple languages and enables specific queries for feast names and calendar descriptions based on the selected calendar system.
Verified 4 days ago: 100% uptime
API key
Unconfirmed
HTTPS
Not supported
Browser calls
No, needs a proxy
Status
Live · 100/100
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
A starting template for Church Calendar API. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Authentication requirement is unconfirmed. Check the documentation before relying on this.
curl -s "http://calapi.inadiutorium.cz/ENDPOINT" \
-H "Authorization: Bearer YOUR_TOKEN" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
This API is served over plain HTTP. Browsers block HTTP requests made from an HTTPS page, so you will need a server-side call.
Aggregated from one public source (freepublicapis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Answered from what our own scheduled checks found, not from the provider's marketing.
Church Calendar API is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Church Calendar API requires some form of authentication. Check the provider's documentation for which scheme it expects.
Not directly. Church Calendar API did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Yes, as of 2026-09-18. Our automated check reached Church Calendar API and recorded a 100% reliability score with a median response time of 994 ms. We re-check on a schedule, and this page updates with the result.
No. Church Calendar API was only reachable over plain HTTP when we checked. Browsers block HTTP requests made from an HTTPS page, so this will fail in production unless you call it from a server instead.