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Public holiday

Constitution Dayวันรัฐธรรมนูญ

Commemorating Thailand's first constitution in 1932 — twenty constitutions ago

Next
In 4 weeks
10 December 2026
Where
Nationwide, Democracy Monument, Bangkok
Public holiday
Yes
Alcohol sales
Normal

In short

Constitution Day marks the promulgation of Thailand's first permanent constitution on 10 December 1932, six months after the revolution that ended absolute monarchy. It is a public holiday, and one with a certain amount of dry humour attached to it locally: Thailand has adopted twenty constitutions since, most recently in 2017. Observance is largely ceremonial, centred on the Democracy Monument in Bangkok.

Go if

  • The start of the best weather of the year — December is cool, dry and clear in most of the country
  • A long weekend bridging into the Father's Day holiday on 5 December

Be aware

  • Banks and government offices closed
  • It sits in the middle of Thailand's high season; domestic transport and hotels are at peak pricing
  • Wreath-laying and occasional demonstrations at the Democracy Monument can close Ratchadamnoen Klang

Dates

Fixed on 10 December, with an in-lieu weekday holiday if it falls at a weekend.

  • 10 December 2026Thursday.
  • 10 December 2027Friday.

Sources

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