Non-Working Days
Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other


Data on national, regional, and religious holidays via API.
Public Holidays API is a free Calendar API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Free API to get the official bank and public holidays for 200+ countries, states, and provinces for 100+ years. Get your free API key to start today.
Details from abstractapi.com.

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Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other
Public holidays for US states and 30 countries plus sports and finance calendars as static JSON
Provides namedays for multiple countries
Yes. The Public Holidays 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.
Yes. The Public Holidays API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Public Holidays API supports CORS, so front-end JavaScript can call it directly.
Yes. The Public Holidays API is served over HTTPS, so it's safe to use in production.