Spanish Constitution Day
Spanish Constitution Day remembers the 6 December 1978 referendum; in 2026 several communities take Monday 7 December as the public holiday under a “Monday after” title.
What it means
It marks the constitutional foundation of democratic Spain after the Transition.
Origin and history
Constitution approved by referendum 6 Dec 1978, in force 29 Dec 1978 (published in the BOE, Spain’s official state gazette, as BOE-A-1978-31229); labour holiday practice includes Sunday-to-Monday transfer.
How it is observed in Spain
Civic remembrance; 2026 paid Monday 7 December where listed; often near the Immaculate Conception holiday.
Interesting facts
- Referendum day ≠ entry-into-force day.
- 2026 uses the transfer title for the civil holiday.
- Not observed as this Monday in every community.
Check the 2026 dates
Holiday status depends on place. See the official calendar pages for the locations covered by this guide.
- Andalusia public holidays 2026
- Aragon public holidays 2026
- Asturias public holidays 2026
- Balearic Islands public holidays 2026
- Canary Islands public holidays 2026
- Cantabria public holidays 2026
- Castile and León public holidays 2026
- Castilla-La Mancha public holidays 2026
- Catalonia public holidays 2026
- Extremadura public holidays 2026
- Galicia public holidays 2026
- Madrid public holidays 2026
- Murcia public holidays 2026
- Navarre public holidays 2026
- Basque Country public holidays 2026
- La Rioja public holidays 2026
- Valencian Community public holidays 2026