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Full detail: Where this data comes from
Holiday API is a commercial reference-data service that delivers verified public holidays, observances, country and language metadata, and workday calculations for 250 countries and 3,680+ state/province subdivisions in 100+ languages. Operated by Gravity Boulevard, LLC, it exposes five JSON endpoints under https://holidayapi.com/v1/ with official client libraries for Go, Node.js, PHP, Python, Ruby, and Raku.
APIs.json: https://raw.githubusercontent.com/api-evangelist/holidays/main/apis.yml
- Calendar
- Holidays
- Public Holidays
- Observances
- Reference Data
- Countries
- Languages
- Workdays
- Business Days
- Localization
- Created: 2026-05-28
- Modified: 2026-05-29
Retrieves public holidays and observances for countries, states, and provinces. Supports filtering by year, month, day, language, previous/upcoming queries, and free-text search.
- Human URL: https://holidayapi.com/docs
- Base URL:
https://holidayapi.com/v1
- Holidays
- Calendar
- Public Holidays
- Documentation
- OpenAPI — OpenAPI Specification
- JSON Schema — JSON Schema
- JSON Structure
- Example
- JSON-LD — JSON-LD
Lists supported countries with ISO codes (alpha-2, alpha-3, numeric), spoken languages, currencies, flag image URLs, weekend days, and state/province subdivisions.
- Human URL: https://holidayapi.com/countries
- Base URL:
https://holidayapi.com/v1
- Countries
- Reference Data
- Subdivisions
- Documentation
- OpenAPI — OpenAPI Specification
- JSON Schema — JSON Schema
- JSON Structure
- Example
- JSON-LD — JSON-LD
Lists supported languages (ISO 639-1 codes with documented exceptions) used to retrieve localized holiday names. Holiday API supports 100+ languages.
- Human URL: https://holidayapi.com/languages
- Base URL:
https://holidayapi.com/v1
- Languages
- Localization
- Reference Data
- Documentation
- OpenAPI — OpenAPI Specification
- JSON Schema — JSON Schema
- JSON Structure
- Example
- JSON-LD — JSON-LD
Two operations for working-day arithmetic that honor a country's workweek and public holidays: get the workday that occurs a given number of days after a start date, and count the number of workdays between two dates.
- Human URL: https://holidayapi.com/docs
- Base URL:
https://holidayapi.com/v1
- Workdays
- Business Days
- Calendar
- Documentation
- OpenAPI — OpenAPI Specification
- JSON Schema — JSON Schema
- JSON Structure
- Example
- Example
- JSON-LD — JSON-LD
- Website
- Portal
- Documentation
- OpenAPI — OpenAPI Specification
- JSON Schema — JSON Schema
- JSON Structure
- JSON-LD — JSON-LD
- Spectral Rules
- Vocabulary
- Plans
- Rate Limits
- Pricing
- Sign Up
- Login
- Terms of Service
- Contact
- GitHub Organization
- Public APIs Listing
- Example
- SDK
- SDK
- SDK
- SDK
- SDK
- SDK
- Features
- Use Cases
- Integrations
FN: Kin Lane Email: kin@apievangelist.com URL: https://apievangelist.com