King Chulalongkorn Memorial Day (Piyamararaj Day)2026 · Date · History
Thailand Ministry of Foreign Affairs
About King Chulalongkorn Memorial Day (Piyamararaj Day)
King Chulalongkorn Memorial Day, also called Piyamararaj Day, is observed in Thailand on October 23 in memory of King Chulalongkorn (Rama V).
Thai government sources use the date for official remembrance ceremonies and list it in official holiday calendars.
Why King Chulalongkorn Memorial Day (Piyamararaj Day) matters
The day is a royal and civic memorial tied to the anniversary of King Chulalongkorn’s death.
Historical descriptions of his reign can involve interpretation; this guide keeps the observance identity, date and official commemoration separate from broader evaluation of monarchy or policy.
History of King Chulalongkorn Memorial Day (Piyamararaj Day)
King Chulalongkorn died on October 23, 1910.
Thailand’s Public Relations Department states that during the reign of King Rama VI the government declared October 23 an important memorial day known as Piyamararaj Day.
The Ministry of Foreign Affairs documents official October 23 remembrance ceremonies.
Thai diplomatic holiday calendars identify King Chulalongkorn Memorial Day on October 23.
The reviewed sources do not establish the exact original legal instrument or the first observed edition.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
Government during the reign of King Rama VI
Thailand’s Public Relations Department states that the government declared October 23 an important memorial day during Rama VI’s reign.
Thai government and royal/diplomatic institutions
The Ministry of Foreign Affairs documents official ceremonies and diplomatic calendars list the holiday.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
6 fields not established in reviewed sources
Also known as
Chulalongkorn Day / Piyamararaj Day
How to Observe King Chulalongkorn Memorial Day (Piyamararaj Day)
Learn about King Chulalongkorn’s reign through museums, archives and historical scholarship.
Observe official ceremonies respectfully if attending in Thailand or at a Thai institution abroad.
Keep factual commemoration details separate from personal views about monarchy or political history.
Use October 23 as the annual anchor date and check local schedules for closures or ceremony times.
When writing about historical reforms, attribute interpretations and avoid reducing a long reign to a single claim.
King Chulalongkorn Memorial Day (Piyamararaj Day) Facts
The observance falls on October 23.
October 23 is the anniversary of King Chulalongkorn’s death in 1910.
Thai government information identifies the day as Piyamararaj Day / King Chulalongkorn Memorial Day.
Official Thai institutions conduct remembrance ceremonies.
The precise original establishing instrument is not asserted in the reviewed evidence.
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
- Remembrance Civic Context Care.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
Royal Thai Consulate-General — Official Holidays 2026 (opens in a new tab)
Diplomatic Government Calendar
Thailand Ministry of Foreign Affairs — Piyamararaj Day commemoration (opens in a new tab)
National Diplomatic Authority
Thailand Public Relations Department — 23 October Piyamararaj Day (opens in a new tab)
National Government Information
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is King Chulalongkorn Memorial Day (Piyamararaj Day)?
23 October The documented recurrence rule is: 23 October.
Does King Chulalongkorn Memorial Day (Piyamararaj Day) fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is King Chulalongkorn Memorial Day (Piyamararaj Day) an official public holiday?
The reviewed sources verify it within this scope: Thai royal memorial day; 23 October 2026 in the official calendar. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes King Chulalongkorn Memorial Day (Piyamararaj Day)?
The reviewed sources identify Government during the reign of King Rama VI as the proclaiming or establishing body. Current facilitation or coordination is recorded as Thai government and royal/diplomatic institutions.
Is King Chulalongkorn Memorial Day (Piyamararaj Day) international or country-specific?
No single country is assigned to this observance. Its documented scope is: Thai royal memorial day; 23 October 2026 in the official calendar. Use that scope rather than assuming worldwide or country-specific status.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-09-30.
When is King Chulalongkorn Memorial Day?
It is observed on October 23.
Why October 23?
The date is the anniversary of King Chulalongkorn’s death on October 23, 1910.
What is Piyamararaj Day?
Thai government sources use Piyamararaj Day for the October 23 memorial observance honoring King Chulalongkorn.
When was the memorial day formally created?
Government historical material places the declaration during the reign of King Rama VI, but the reviewed sources do not establish the exact original instrument or first observed year.
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