Checkiday - National Holiday API vs Non-Working Days
If you need a Calendar API that's easy to integrate, go with Non-Working Days.
Checkiday - National Holiday API
Industry-leading Holiday API. Over 5,000 holidays and thousands of descriptions. Trusted by the World’s leading companies
Non-Working Days
Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other
Checkiday - National Holiday API
- Simple API key authentication
- HTTPS supported
Non-Working Days
- No authentication required
- HTTPS supported
- CORS enabled for frontend use
| Feature | Checkiday - National Holiday API | Non-Working Days |
|---|---|---|
| Authentication | apiKey | None |
| HTTPS | Yes | Yes |
| CORS | Unknown | Yes |
When to use which?
Non-Working Days is the better choice for quick prototypes and hackathons since it requires no authentication. Non-Working Days works directly from the browser with CORS enabled, making it better for frontend-only apps.