Church Calendar

API

Free API for Catholic liturgical calendar data

Overview

The Church Calendar API offers RESTful access to accurate Catholic liturgical calendar information, including feast days, liturgical seasons, readings, and commemorations. Key endpoints support querying by specific date (e.g., /api/v1/calendar/day/YYYY-MM-DD) or retrieving weekly/monthly liturgical details. Responses are formatted in JSON, ensuring compatibility with most programming languages and platforms. Ideal use cases include integrating liturgical data into religious mobile apps, parish websites, personal devotional tools, or educational resources focused on Catholic worship practices.

Example Integration (JavaScript)

script.js JS


fetch('http://calapi.inadiutorium.cz/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful Architecture
JSON Response Format
No API Key Required
Covers Feasts, Seasons & Readings
Date-based Query Support

Frequently Asked Questions

? Is Church Calendar API free to use?

Yes, the API is free for both personal and non-commercial use without any hidden costs.

? Does it require an API Key?

No, you can access all endpoints without authentication or an API key.

? What is the response format?

All API responses are in JSON format, which is easy to parse and integrate into various applications.

Top Alternatives

Universalis API Search Google

Catholic Liturgy API Search Google

Tool Info

Pricing Free

Category Calendar

Platform Public API

Pros

⊕ Free access
⊕ Easy integration
⊕ Comprehensive liturgical data
⊕ Lightweight JSON responses

Cons

⊖ Limited to Catholic tradition
⊖ Lack of explicit rate limit documentation
⊖ No official support SLA