Calendar¶

18 free Calendar APIs — auth type, HTTPS and CORS support for each, so you can pick the right one without opening every docs page.

API	Description	Auth	HTTPS	CORS
caldays	Public holidays for 195+ countries	No	Yes	Yes
Calendarific	Worldwide Holidays	`apiKey`	Yes	Unknown
Checkiday - National Holiday	Industry-leading holiday data with over 5,000 holidays and thousands of descriptions	`apiKey`	Yes	Unknown
Church Calendar	Catholic liturgical calendar	No	No	Unknown
Czech Namedays Calendar	Lookup for a name and returns nameday date	No	No	Unknown
Festivo Public Holidays	Fastest and most advanced public holiday and observance service on the market	`apiKey`	Yes	Yes
Google Calendar	Display, create and modify Google calendar events	`OAuth`	Yes	Unknown
Hebrew Calendar	Convert between Gregorian and Hebrew, fetch Shabbat and Holiday times, etc	No	No	Unknown
Holidays	Historical data regarding holidays	`apiKey`	Yes	Unknown
LectServe	Protestant liturgical calendar	No	No	Unknown
Nager.Date	Public holidays for more than 90 countries	No	Yes	No
Namedays Calendar	Provides namedays for multiple countries	No	Yes	Yes
Non-Working Days	Database of ICS files for non working days	No	Yes	Unknown
Non-Working Days	Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other	No	Yes	Yes
Public Holidays	Data on national, regional, and religious holidays via API	`apiKey`	Yes	Yes
Russian Calendar	Check if a date is a Russian holiday or not	No	Yes	No
The Calendar	Public holidays for US states and 30 countries plus sports and finance calendars as static JSON	No	Yes	Yes
UK Bank Holidays	Bank holidays in England and Wales, Scotland and Northern Ireland	No	Yes	Unknown