nager/Nager.Date

Health v2 · maintenance only

Adoption not part of the score

1396 stars · 217 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Nager.Date is a .NET-based public holiday data project covering 200+ countries, exposed via a free public REST API, a hosted website, a Docker container, and NuGet packages for offline use. It lets applications query holidays by country and year with local names, global/regional flags, and holiday types.

Use cases

• get public holidays for a country and year
• check if a date is a holiday in a specific country
• add holiday awareness to payroll or scheduling software
• self-host a holiday API with Docker for offline use
• generate an API client in any language from OpenAPI
• list bank holidays across 200+ countries

When to choose

• you need worldwide public holiday data with broad country coverage
• you want both an online REST API and offline NuGet/Docker options
• you are building on .NET and want a maintained holiday library

When to avoid

• you need fully free offline use without a sponsor license key
• you need non-holiday calendar features like events or reminders
• you need guaranteed legal accuracy of holiday rules for compliance

Facets

library · maturity active

api-framework http-server date-time sdk apis developer-tools dotnet self-hosted cross-platform public-holidays holiday-api rest-api nuget calendar bank-holidays csharp automation docker web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="nager/Nager.Date")