Church Calendar API
Roman Catholic liturgical calendar as a no-auth REST API.
- Free
- No key
- Open source
Description
Serves the General Roman Calendar as reformed after the Second Vatican Council: the season, rank, liturgical colour and celebrations for any date, plus whole-year listings. Runs at calapi.inadiutorium.cz with no key and no rate limit, and the Ruby service behind it is open source so you can self-host a diocesan or religious-order calendar with its own proper celebrations. The usual starting point for anyone who needs 'what feast is today?'.
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