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Public APIs · by APILayerData from public-apis (MIT)
  1. Home
  2. /Categories
  3. /Calendar

Free Calendar APIs

22 free public Calendar APIs for developers. 18 support HTTPS, 10 allow CORS from the browser and 15 need no API key.

APILayerOne account · one API key
Get API key→

Showing 22 of 22 APIs

Africa Compliance Data logo

Africa Compliance Data

Public holidays and business days for all 54 African countries, from official sources

apiKeyHTTPSCORS
caldays logo

caldays

Public holidays for 195+ countries

No authHTTPSCORS
C

Calendarific

Worldwide Holidays

apiKeyHTTPSCORS ?
Checkiday - National Holiday logo

Checkiday - National Holiday

Industry-leading holiday data with over 5,000 holidays and thousands of descriptions

apiKeyHTTPSCORS ?
C

Church Calendar

Catholic liturgical calendar

No authNo HTTPSCORS ?
CountdownsHQ logo

CountdownsHQ

Dates and timezone-correct countdowns for 150+ holidays and observances in 18 countries

No authHTTPSCORS
C

Czech Namedays Calendar

Lookup for a name and returns nameday date

No authNo HTTPSCORS ?
F

Festivo Public Holidays

Fastest and most advanced public holiday and observance service on the market

apiKeyHTTPSCORS
Google Calendar logo

Google Calendar

Display, create and modify Google calendar events

OAuthHTTPSCORS ?
Hebrew Calendar logo

Hebrew Calendar

Convert between Gregorian and Hebrew, fetch Shabbat and Holiday times, etc

No authNo HTTPSCORS ?
Holidays logo

Holidays

Historical data regarding holidays

apiKeyHTTPSCORS ?
India Public Holidays logo

India Public Holidays

Official Indian public holidays for the Central government and 36 states/UTs

No authHTTPSCORS
Intellibook logo

Intellibook

Appointment booking and availability API for salons and clinics

No authHTTPSCORS
LectServe logo

LectServe

Protestant liturgical calendar

No authNo HTTPSCORS ?
Nager.Date logo

Nager.Date

Public holidays for more than 90 countries

No authHTTPSNo CORS
N

Namedays Calendar

Provides namedays for multiple countries

No authHTTPSCORS
Non-Working Days logo

Non-Working Days

Database of ICS files for non working days

No authHTTPSCORS ?
Non-Working Days logo

Non-Working Days

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

No authHTTPSCORS
Public Holidays logo

Public Holidays

Data on national, regional, and religious holidays via API

apiKeyHTTPSCORS
Russian Calendar logo

Russian Calendar

Check if a date is a Russian holiday or not

No authHTTPSNo CORS
The Calendar logo

The Calendar

Public holidays for US states and 30 countries plus sports and finance calendars as static JSON

No authHTTPSCORS
UK Bank Holidays logo

UK Bank Holidays

Bank holidays in England and Wales, Scotland and Northern Ireland

No authHTTPSCORS ?

Calendar API FAQ

How many free Calendar APIs are there?

There are 22 free public Calendar APIs in the directory. 18 support HTTPS, 10 are confirmed to allow CORS and 15 need no API key.

Which Calendar APIs work without an API key?

15 Calendar APIs need no authentication, including caldays, Church Calendar, CountdownsHQ and Czech Namedays Calendar. You can call them straight away without signing up.

Which Calendar APIs can I call from the browser?

APIs with CORS enabled can be called directly from front-end JavaScript. In Calendar, that includes Africa Compliance Data, caldays, CountdownsHQ and Festivo Public Holidays.