Global Public Holidays & Business Days API

Idea Overview

An open API that returns a list of public holidays in JSON/iCal format when you enter a country and year. It also provides endpoints to calculate common business days between two countries and check if a specific date is a public holiday.

What You'll Learn

You can learn REST API design principles, iCal format generation, multi-country public holiday data collection and normalization, API key authentication and rate limiting, and automatic Swagger documentation generation.

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