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Checkiday National Holiday API

API
By:
API Layer
Updated:
April 3, 2025

About this Cloud Hub Solution:

Tap into the world's most trusted, complete, and accurate holiday data set, trusted by leading companies like CNN, The New York Times, Huffington Post, Vice, USA Today, WikiHow, Daily Mail, Gizmodo, Esquire, Upworthy, and Lifehack.

Why is Checkiday the most accurate?

Checkiday's API is built by developers for developers, with a proprietary software that computes holiday dates from predefined patterns, eliminating human error. Every holiday in our database has been individually researched by trained human researchers to ensure authenticity and accuracy. Our data has been used by tens of millions and reaches many more through our customers. If an error is discovered, we quickly verify and correct it.

Why is Checkiday the most complete?

Checkiday has been researching holidays for over 11 years, initially scraping the internet to find potential holidays to verify. Our database now contains 5,000 unique events, and due to our popularity, many events are submitted directly to us by their creators or fans.

How do I Access the API?

Checkiday provides and maintains free client libraries in various popular languages, including:

  • JavaScript/TypeScript
  • Python
  • C#
  • PHP
  • Go
  • Dart
  • Rust

More languages are coming soon! If you don't see your language yet, please let u

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Checkiday National Holiday API

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