USA
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Holiday
World Science Day for Peace and Development
Tuesday, November 10, 2026
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Tuesday, November 10
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For developers
Holidays API for your apps
Federal, state and local holidays for 230+ countries with a simple GET request. Perfect for HR, payroll, booking and scheduling software.
API Examples
Quick start examples in different programming languages
curl -X GET "https://api.11holidays.com/v1/holidays?country=US&year=2026" \
-H "Authorization: Bearer YOUR_API_KEY"