Holiday Data Sources & Review Dates
Country-by-country public holiday data sources, review dates, coverage notes, and known limitations.
Written and maintained by DeadlineDaysReviewed on July 28, 2026
Holiday Data Sources & Review Dates
DeadlineDays holiday-aware calculators load country and year holiday data in the browser from the Nager.Date Public Holiday API. This page lists the reference official source, last review date, coverage, and known limitations for each supported country.
Holiday-source records are reviewed by the site operator before review dates or coverage notes are changed. API output is still a planning reference and can differ from regional, temporary, bank, school, company, or contract-specific calendars.
- Verified
- US 2026, US 2027, GB 2026, SG 2026, SG 2027
- Not verified
- GB 2027, KR 2026, JP 2026, CA 2026
- Scope incomplete
- DE 2026, AU 2026
- Unsupported
- IN 2026
| Country and year | Status | Comparison result or limit |
|---|---|---|
| US 2026 | Verified | 11 observed federal closure dates; state, local, bank, school, and employer calendars are outside this snapshot. |
| US 2027 | Verified | 11 observed federal closure dates; state, local, bank, school, and employer calendars are outside this snapshot. |
| GB 2026 | Verified | GOV.UK dates and divisions were compared for England and Wales, Scotland, and Northern Ireland. |
| SG 2026 | Verified | Gazetted holidays were checked with the stated Sunday rest-day substitutions. |
| SG 2027 | Verified | Gazetted holidays were checked with the stated Sunday rest-day substitution. |
| GB 2027 | Not verified | The API date for Scotland's 2 January observance differs from the GOV.UK substitute day. |
| KR 2026 | Not verified | The API mixes government holidays, labor holidays, election dates, and later legal changes. |
| JP 2026 | Not verified | The API omits two official dates and mislabels one May date. |
| DE 2026 | Scope incomplete | The Berlin subset matched, but the other 15 federal states were not fully compared. |
| AU 2026 | Scope incomplete | New South Wales was sampled; the other seven state and territory calendars were not fully compared. |
| CA 2026 | Not verified | National flags and regional rows differ from the CRA deadline calendar. |
| IN 2026 | Unsupported | Nager.Date returned no 2026 holiday content when checked on 2026-07-17. |
Source review date: 2026-07-28. Not verified, scope-incomplete, and unsupported entries are not used as verified snapshots.
United States (US)
Data API: Nager.Date Public Holiday API. Official reference source: U.S. Office of Personnel Management Federal Holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Federal holidays differ from state, local, employer, and bank holidays. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
United Kingdom (GB)
Data API: Nager.Date Public Holiday API. Official reference source: GOV.UK Bank holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Bank holidays differ between England and Wales, Scotland, and Northern Ireland. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Canada (CA)
Data API: Nager.Date Public Holiday API. Official reference source: Canada Revenue Agency Public holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Federal, provincial, and Quebec-specific holidays can differ. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Australia (AU)
Data API: Nager.Date Public Holiday API. Official reference source: Fair Work Ombudsman Public holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Public holidays can differ by state or territory. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
India (IN)
Data API: Nager.Date Public Holiday API. Official reference source: Department of Personnel and Training holiday list. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Nager.Date returned no 2026 holiday content when checked on 2026-07-17. Verify national, state, bank, and organization calendars before using an India result. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Singapore (SG)
Data API: Nager.Date Public Holiday API. Official reference source: Singapore Ministry of Manpower Public holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Gazetted public holidays are published by the Ministry of Manpower. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Philippines (PH)
Data API: Nager.Date Public Holiday API. Official reference source: Official Gazette nationwide holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Regular, special, and local holidays may differ. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Japan (JP)
Data API: Nager.Date Public Holiday API. Official reference source: Cabinet Office Japan National Holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: National holidays and substitute holidays are published by the Cabinet Office. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
South Korea (KR)
Data API: Nager.Date Public Holiday API. Official reference source: Korea Astronomy and Space Science Institute 2026 calendar standard. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: The API mixes government holidays, labor holidays, election dates, and later legal changes. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Germany (DE)
Data API: Nager.Date Public Holiday API. Official reference source: Berlin official 2026 public holiday calendar. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Public holidays in Germany can differ by federal state. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
France (FR)
Data API: Nager.Date Public Holiday API. Official reference source: Service-Public.fr jours feries. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: Some French holidays and local observances can differ by region or local rule. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Spain (ES)
Data API: Nager.Date Public Holiday API. Official reference source: Punto de Acceso General - Calendarios laborales. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: National, autonomous community, and local holidays can differ. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Mexico (MX)
Data API: Nager.Date Public Holiday API. Official reference source: Camara de Diputados Federal Labor Law. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: National and local observances can differ. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Brazil (BR)
Data API: Nager.Date Public Holiday API. Official reference source: Brazil MGI 2026 federal holiday regulation. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: State and municipal holidays can differ. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.
Indonesia (ID)
Data API: Nager.Date Public Holiday API. Official reference source: Kemenko PMK 2026 national holidays. Last reviewed: 2026-07-28. Coverage: National public holidays are used as the default, and regional or special holiday types may be shown when the data source provides them. Known limitations: National leave and joint leave rules may change by government announcement. Company closures, bank holidays, school holidays, temporary closures, and contract-specific non-working days can differ from calculator results.