13 source-backed records whose verified scope explicitly identifies Japan. This is an observance index, not a public-holiday calendar.
The Imperial Household Agency records Akihito’s birth on 23 December 1933 and abdication on 30 April 2019. The Cabinet Office says Japan’s current Emperor’s Birthday holiday is 23 February…
Japan’s Cabinet Office identifies Constitution Memorial Day on 3 May and explains that it commemorates the enforcement of the Constitution and hopes for national development.
Australia’s Department of Foreign Affairs and Trade current National Days protocol register lists Japan — Emperor's Birthday on 23 February. The source verifies the diplomatic national-day…
The Japan National Tourism Organization describes the third day of the third month as the annual Hina Matsuri or Doll’s Festival/Girls’ Day celebration in Japan.
Japan’s Cabinet Office identifies Kodomo no Hi as a national holiday on 5 May under the national-holiday framework.
Japan’s Cabinet Office lists Mountain Day on 11 August 2026 among the national holidays and describes its purpose as an opportunity to become familiar with mountains and appreciate their be…
Japan’s Prime Minister’s Office documents the Nagasaki Peace Memorial Ceremony on 9 August 2026, while Nagasaki’s official visitor information says the ceremony is held on 9 August every ye…
National Today places National Dashi Day on October 15, and EventGuide independently lists it every October 15.
Japan National Tourism Organization describes Obon as typically occurring between 13 and 16 August while noting regional and travel-pattern context.
Japan’s Cabinet Office explains that Respect for the Aged Day has fallen on the third Monday of September since 2003; in 2026 that is 21 September. It separately identifies 15 September as…
Japan’s Act on National Holidays names Sports Day and sets it on the second Monday in October.
JNTO describes Tanabata as the Star Festival associated with the seventh day of the seventh month; travel references note that modern celebrations can occur on July 7 or around August 7 dep…
Japan National Tourism Organization explains that Tanabata festivals are usually held on the seventh day of the seventh month and may occur in July or August depending on the calendar used.
