Kodomo no Hi (Children’s Day)2026 · Date · History · Messages
Japan’s National Holidays Act establishes Children’s Day on May 5; Cabinet Office historical material documents its original 1948 establishment and date-selection rationale.
About Kodomo no Hi (Children’s Day)
Kodomo no Hi (Children’s Day) is a Japanese national holiday observed on May 5.
Japan’s National Holidays Act defines the day as one that respects children’s personalities, promotes their happiness and expresses gratitude to mothers.
Why Kodomo no Hi (Children’s Day) matters
The holiday centers children’s dignity and well-being within Japan’s national-holiday framework.
Although May 5 has older seasonal customs associated with Tango no Sekku, the Cabinet Office describes Kodomo no Hi as a new national holiday established in 1948.
History of Kodomo no Hi (Children’s Day)
The National Holidays Act, Law No. 178 of 1948, included Children’s Day among the nine national holidays created when the law was enacted.
The current Cabinet Office history says lawmakers considered customs associated with March 3 and May 5 while designing a new children-focused holiday.
Because May 3 became Constitution Memorial Day, the Cabinet Office says May 5 was selected, also noting the favorable season.
The Cabinet Office specifically notes that the holiday was not intended only for boys, despite the older May 5 Tango no Sekku association.
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.
5 fields not established in reviewed sources
Also known as
Children’s Day (Kodomo no Hi)
How to Observe Kodomo no Hi (Children’s Day)
Read the Cabinet Office explanation of the holiday’s legal purpose and history.
Join family or community activities that center children’s well-being, interests and participation.
Learn about seasonal customs such as koinobori while distinguishing cultural traditions from the legal definition of the national holiday.
Avoid presenting one household custom as mandatory for all families in Japan.
For travel or business planning, use current Cabinet Office holiday calendars because substitute-holiday rules can affect nearby days.
Kodomo no Hi (Children’s Day) Facts
Children’s Day is May 5 in Japan.
It was included in the original 1948 National Holidays Act.
The law gives the holiday an explicit purpose centered on children’s dignity and happiness and gratitude to mothers.
The Cabinet Office says May 5 was chosen after discussion of March 3 and May 5 children-related customs and the separate designation of May 3 as Constitution Memorial Day.
The legal Children’s Day is not defined as a boys-only holiday.
Kodomo no Hi (Children’s Day) Messages
May Children’s Day keep children’s happiness, dignity and voices at the center.
Wishing children and families a joyful and caring Kodomo no Hi.
May May 5 be a day for listening to children and supporting their well-being.
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.
- Minors 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.
Cabinet Office of Japan — Children’s Day history (opens in a new tab)
National Government
Cabinet Office of Japan — National Holidays (opens in a new tab)
National Government
e-Gov Japan — current National Holidays Act (opens in a new tab)
House of Representatives of Japan — Law No. 178 of 1948 (opens in a new tab)
National Statute
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 Kodomo no Hi (Children’s Day)?
5 May annually The documented recurrence rule is: 5 May.
Does Kodomo no Hi (Children’s Day) fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is Kodomo no Hi (Children’s Day) an official public holiday?
Within the reviewed scope, it is identified as Japan / statutory national holiday. That status is not automatically extended to other countries or jurisdictions.
Who established or recognizes Kodomo no Hi (Children’s Day)?
The reviewed sources identify National Diet of Japan as the proclaiming or establishing body.
Is Kodomo no Hi (Children’s Day) international or country-specific?
This observance is specific to Japan. Its fuller verified scope is: Japan / statutory national holiday.
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 2026-09-28.
When is Kodomo no Hi?
Japan’s Children’s Day is May 5.
Is it a national holiday?
Yes. It is one of Japan’s national holidays under the National Holidays Act.
When was Children’s Day established?
It was included when the National Holidays Act was enacted in 1948.
Is Kodomo no Hi only for boys?
No. The Cabinet Office’s history of the law explicitly says the new national holiday was not intended only for boys.
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