This is the first listed date for this year; a separate observance date has not been assigned.
About National Day
Thailand's National Day is observed on 5 December, the birthday anniversary of King Bhumibol Adulyadej the Great. The date is also National Father's Day and an official annual holiday.
Public holiday / closure dates
— Public of holiday period · Confirmed — source checked
— Public of holiday period · Confirmed — source checked
Bank, office and school arrangements require the applicable authority or institution notice. Missing scope data does not mean open.
Next supported occurrence
Saturday, 5 December 2026 · Confirmed — source checked
Next listed holiday day on or after today; this can be a closure day rather than the festival date.
2027 dates
— Public of holiday periodEstimated / awaiting confirmation
— Public of holiday periodEstimated / awaiting confirmation
2028 dates
— Public of holiday periodEstimated / awaiting confirmation
Official sources and date status
Recorded confirmation and independent source review are shown separately. An institution-specific notice does not establish closure for every employer or school.
Official dated 2026 calendar or current legal rule. The official 2026 schedule includes a one-off 2 January holiday and statutory substitute days; Children’s Day is not a public closure.
Official dated 2026 calendar or current legal rule. The official 2026 schedule includes a one-off 2 January holiday and statutory substitute days; Children’s Day is not a public closure.
Office arrangements
Government offices close for the annual holiday. A substitute day is used only when established by the official calendar; a weekday 5 December does not itself generate an earlier in-lieu day.
Bank arrangements
Financial institutions follow the Bank of Thailand's published annual schedule, which separately identifies actual and substitution dates.
School arrangements
Schools normally close when the date is included in their official calendar and may hold commemorative activities beforehand.
History
The Cabinet designated 5 December as Thailand's National Day, linking the national observance with the late king's birthday anniversary and Father's Day. It is not an independence-day commemoration.
Why it matters
The day carries civic and royal significance and anchors official ceremonies nationwide. When a substitute holiday applies, its exact date and sectoral scope come from the applicable government or financial-institution calendar.
Observance
Official ceremonies, commemorative displays, charitable activities and tributes to fathers take place across Thailand. Government buildings and public spaces may be illuminated or decorated.
Travel and planning
Ceremonies can affect access and traffic near government and royal sites. Check current official notices rather than relying on projected substitute dates.
Frequently asked questions
When is Thailand's National Day?
It is observed annually on 5 December.
What does it commemorate?
It marks King Bhumibol Adulyadej the Great's birthday anniversary and is also National Father's Day.
Is an in-lieu date automatic?
No. Use the officially published schedule for the relevant year and sector.