Calendar — entry 003 of 17
Checkiday - National Holiday
Checkiday's APILayer listing wraps checkiday.com's database of more than 5,000 quirky and cultural “national day” holidays — things like National Junk Food Day — each with a short description and source links. Calls go through APILayer's shared gateway with an apikey header and return JSON keyed by date, optionally filtered by category (food, health, awareness, etc.) or a specific country/state calendar. The free plan allows 100 requests a month; paid Starter/Pro/Enterprise tiers raise that to the tens of thousands.
GreatAPIs Score
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<a href="https://greatapis.com/api/checkiday-national-holiday/"><img src="https://greatapis.com/badge/checkiday-national-holiday.svg" alt="Scored 61 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
100 requests/month (Free plan; Starter 5,000/mo, Pro 35,000/mo, Enterprise 75,000/mo) -- per marketplace.apilayer.com/checkiday-api