HolidayAPI and Calendarific alternatives

HolidayAPI bills annually from $249/year; its free quota is not published. Calendarific Free has 500 monthly calls, attribution and quarterly updates; Starter costs $12/month. Compare alternatives for billing, coverage and integration.

Decision

Choose Narwhal when its countries fit and you want official government holidays through REST and MCP. Choose Nager.Date or API Ninjas for broader hosted coverage, or date-holidays for local JavaScript.

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Provider shortlist

Narwhal API is owned and operated by Nusantara Ventures, LLC.

Compare the options

Best fit is not feature parity. Check the evidence and limitation together.

ProviderBest forEvidence checkedImportant limitation
Narwhal APIOfficial government holidays alongside release calendars and FX.REST and hosted MCP support whole-year, single-date and next-holiday lookups; Free allows commercial apps.Coverage is smaller: 37 countries in 2026 and 31 in 2027, versus 200+ elsewhere.
Nager.DateFree hosted holidays without an API key.The MIT open-source project lists 200+ countries and advertises no rate limits.No SLA is published; offline Docker and NuGet require a sponsor licence key.
API NinjasBroad holiday coverage alongside other APIs and official MCP.Holidays cover 230+ countries and territories; Free allows 3,000 monthly calls across its catalogue.Free returns the current year, excludes commercial use, requires attribution and prohibits caching.
Abstract APIHosted holiday lookups across countries and regions.Covers 190+ countries and 3,500+ regions; paid plans support whole-year requests.Free requires year, month and day; its quota period is not stated. Update-frequency statements conflict.
date-holidaysFree local holiday calculations in JavaScript.207 countries with subdivisions; code uses ISC and data uses CC BY-SA 3.0.Data partly uses Wikipedia; computed Islamic dates can differ from moon sighting.

Choose by requirement

Check country coverage

Narwhal covers 37 countries in 2026 and 31 in 2027. Nager.Date, API Ninjas and date-holidays each list more than 200 countries.

Choose hosted or local

Narwhal offers hosted REST and MCP. date-holidays runs locally in JavaScript. Nager.Date's hosted API is free; offline Docker and NuGet require a sponsor licence key.

Check usable free access

Narwhal Free permits commercial apps and 5,000 monthly requests. API Ninjas Free excludes commercial use. Abstract Free requires a year, month and day rather than whole-year requests.

Sources and review date

Each detailed provider page lists the first-party documentation used, its evidence boundaries, and its review date.

Reviewed:

Test the overlapping job

Inspect Narwhal's published coverage and response contract before choosing a provider.

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