Calendarific

Provides a RESTful JSON API that supplies public, local, bank holidays and observances to handle scheduling, payroll, leave and localization tasks that require accurate holiday data. Serves developers, engineering and product teams in businesses of various sizes across finance, HR, logistics and other sectors that build software needing holiday awareness. Delivered as a cloud-hosted API with a single query-string key, monthly quota and endpoints for countries, languages and holidays through 2049.

Key features

• RESTful JSON holidays API
• 230+ countries coverage
• 3,300+ states and regions
• 100+ languages with translation
• Filter by national, local, religious, observance
• Filter by month and day
• Filter by ISO 3166-2 location
• Includes substitute bank holidays
• Stable holiday UUIDs
• Data through year 2049
• Single API key authentication
• Monthly quota dashboard tracking
• Latency-based DNS routing
• Auto-scaling cloud servers