When is Children’s Day?
In 2026, Children’s Day falls on Tuesday, May 5, 2026. It is classified here as a Japanese national holiday.
History of Children’s Day
Children’s Day, Kodomo no Hi, celebrates children’s personalities and happiness while expressing gratitude to mothers. It was established as a national holiday in 1948, but its date overlaps with the older Boys’ Festival, Tango no Sekku, one of Japan’s seasonal festivals.
The best-known symbols are koinobori carp streamers, displayed to wish children strength and healthy growth, and warrior dolls or helmets. Modern families celebrate all children, while the traditional imagery continues to make May 5 one of the most recognisable dates in the spring calendar.
Children’s Day is governed by Japan’s Act on National Holidays, and the Cabinet Office’s official calendar confirms its 2026 date. A statutory national holiday falling on Sunday creates a holiday on the nearest following day that is not already a national holiday; a weekday between two national holidays is also a holiday. These rules, not an informal “Mondayisation” assumption, produce May 6 and September 22 in 2026. Bank of Japan offices additionally close from December 31 through January 3, but those banking closures do not turn December 31 or January 2–3 into national holidays for all workers and businesses.
How Children’s Day is observed
A national holiday on May 5. Business, school, transport and museum hours remain institution-specific even on a statutory holiday.
Traditions of Children’s Day
Carp streamers
Koinobori are flown outside homes and public spaces as wishes for children to grow strong and resilient. Practice for Children’s Day differs by region, generation, household and institution.
Kabuto and dolls
Families may display helmets, armour or dolls connected with courage and protection. Practice for Children’s Day differs by region, generation, household and institution.
Seasonal sweets
Kashiwa mochi and chimaki are enjoyed in many homes as part of the May festival season. Practice for Children’s Day differs by region, generation, household and institution.
Dates and observance rules are checked against the official Japanese Cabinet Office and legal guidance. National-holiday dates and substitute-day rules should be confirmed against the annual Cabinet Office calendar.
History sources: Cabinet Office, Government of Japan: Act on National Holidays, Cabinet Office, Government of Japan: National Holidays 2026, National Astronomical Observatory of Japan: Calendar information, Bank of Japan: 2026 national and bank holiday schedule, UNESCO: Intangible Cultural Heritage lists.
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