Emperor's Birthday2026 · Date · History
Japan’s Cabinet Office lists the Emperor’s Birthday as a national holiday on February 23 and explains that the holiday has existed under the National Holidays Act since 1948, with its date changing with imperial succession; the current February 23 date took effect in 2019 for Emperor Naruhito’s birthday.
About Emperor's Birthday
Japan observes the Emperor’s Birthday as a national holiday on February 23.
The current date corresponds to Emperor Naruhito’s birthday; the holiday’s calendar date has changed with imperial succession.
Why Emperor's Birthday matters
The national holiday is designated for celebrating the Emperor’s birthday.
Its identity is continuous as a national-holiday category even though the exact date changes when a new emperor succeeds.
History of Emperor's Birthday
Japan’s National Holidays Act has included an Emperor’s Birthday holiday since the law was enacted in 1948.
The Cabinet Office explains that the holiday was originally April 29 for Emperor Shōwa, changed to December 23 after the 1989 succession, and changed to February 23 under the legal arrangements for the most recent imperial succession.
The current February 23 date took effect on May 1, 2019 and reflects Emperor Naruhito’s birthday.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
Emperor’s Birthday on April 29
The 1989 succession-related amendment changed the Emperor’s Birthday date to December 23.
Emperor’s Birthday on December 23
The current February 23 date took effect with the 2019 succession arrangements.
National Diet of Japan
Act on National Holidays (Act No. 178 of 1948), as subsequently amended
Changed the Emperor’s Birthday date from April 29 to December 23 after imperial succession.
National Diet of Japan / Government of Japan · 1989 amendment to the National Holidays Act
Changed the statutory Emperor’s Birthday date to February 23 for the current reign.
National Diet of Japan / Government of Japan · Supplementary provisions to the 2017 special law on imperial abdication
Government of Japan / Imperial Household Agency
The Cabinet Office publishes the national-holiday calendar and the Imperial Household Agency conducts annual birthday events.
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.
3 fields not established in reviewed sources
Predecessor and precursor observances
Earlier or merged observances are kept separate from former names and later institutional actions.
Later institutional actions
Later recognition, renaming, mergers or date changes are kept separate from original establishment.
Also known as
Emperor’s Birthday Japan
How to Observe Emperor's Birthday
Check the Cabinet Office’s annual holiday calendar for official holiday scheduling.
Learn about the holiday’s history through Japanese government sources.
Distinguish the current February 23 date from former Emperor’s Birthday dates that belonged to earlier reigns.
Emperor's Birthday Facts
The current date is February 23.
The Emperor’s Birthday is one of Japan’s national holidays.
The holiday category has existed under the National Holidays Act since 1948.
The date changed from April 29 to December 23 and later to February 23 as a result of imperial succession.
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.
Japan Cabinet Office — history of each national holiday (opens in a new tab)
National Government History
Japan Cabinet Office — national holidays (opens in a new tab)
National Government
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 Emperor's Birthday?
23 February The documented recurrence rule is: 23 February.
Does Emperor's Birthday fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is Emperor's Birthday an official public holiday?
The reviewed sources verify it within this scope: Japan. 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 Emperor's Birthday?
The reviewed sources identify National Diet of Japan as the proclaiming or establishing body. Current facilitation or coordination is recorded as Government of Japan / Imperial Household Agency.
Is Emperor's Birthday international or country-specific?
This observance is specific to Japan. Its fuller verified scope is: Japan.
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 2026-10-01.
When is the Emperor’s Birthday in Japan?
The current national holiday is February 23.
Why February 23?
It is the birthday of the current Emperor, Naruhito.
Was the holiday always on February 23?
No. The Cabinet Office documents earlier dates of April 29 and December 23 under previous emperors.
Is it a national holiday?
Yes. Japan’s Cabinet Office lists the Emperor’s Birthday among the national holidays established under the National Holidays Act.
Other observances on February 23
These observances are also listed on February 23, 2027.
Brunei Darussalam National Day
Government of Brunei Darussalam official holiday calendar and 2026 National Day communications
Curling is Cool Day
Thomas and Ruth Roy’s first-party Wellcat Holidays calendar lists Curling is Cool Day on 23 February and identifies the Wellcat holiday collection as their creation. World Curling material…
Defender of the Fatherland Day
Official website of the President of Russia, current 2026 greeting
Diesel Engine Day
Lviv Polytechnic identifies 23 February as Diesel Engine Day and connects the date to Rudolf Diesel’s patent for the engine in 1893.
National Banana Bread Day
Two ANFP Wyoming chapter calendars list National Banana Bread Day on February 23.
National Hospitality Workers Appreciation Day
Turning Point Australia explicitly marks National Hospitality Workers Appreciation Day on February 23, while current calendar references use February 23 annually.