API archive entry · source-reported
caldays
Public holidays for 195+ countries
Other Calendar APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
Namedays Calendar
Provides namedays for multiple countries
No auth · HTTPS reported · CORS Yes
Non-Working Days
Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other
No auth · HTTPS reported · CORS Yes
The Calendar
Public holidays for US states and 30 countries plus sports and finance calendars as static JSON
No auth · HTTPS reported · CORS Yes
Nager.Date
Public holidays for more than 90 countries
No auth · HTTPS reported · CORS No
Non-Working Days
Database of ICS files for non working days
No auth · HTTPS reported · CORS Unknown
Russian Calendar
Check if a date is a Russian holiday or not
No auth · HTTPS reported · CORS No
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.