
Public holidays for more than 90 countries.
Nager.Date API is a free Calendar API that requires no API key, is served over HTTPS and does not support CORS, so it should be called from a server.
Find public holidays and long weekends for 200+ countries. See all holiday dates easily and plan your days off.
Details from date.nager.at.

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Provides namedays for multiple countries
Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other
The Nager.Date API is provided by Nager.Holidays (date.nager.at). Find public holidays and long weekends for 200+ countries. See all holiday dates easily and plan your days off.
Yes. The Nager.Date API is listed in the Calendar category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Nager.Date API requires no authentication, so you can start making requests without signing up.
Not directly. The Nager.Date API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The Nager.Date API is served over HTTPS, so it's safe to use in production.