The Land of the Rising Sun adopted the Gregorian Calendar during the Meiji Era, which is why Japanese holidays follow the solar rather than the lunar calendar.
National Holidays
New Year’s / Ganjitsu (January 1-3)
Coming of Age Day / Seijin no Hi (2nd Monday in January)
National Foundation Day / Kenkoku Kinen no Hi (February 11)
Spring Equinox / Shunbun no Hi (March 20 or 21)
Showa Day (April 29)
Constitution Memorial Day / Kenpo Kinenbi (May 3)
Greenery Day / Midori no Hi (May 4)
Children’s Day / Kodomo no Hi (May 5)
Marine Day / Umi no Hi (3rd Monday in July)
Respect for the Aged Day / Keiro no Hi (3rd Monday in September)
Fall Equinox / Shuubun no Hi (September 23 or 24)
Health & Sports Day / Taiiku no Hi
Other Holidays
Setsubun (February 3)
Doll Festival / Hina Matsuri (1st Monday in March)
White Day (March 14)
Obon (July 15 or August 15)
Sapporo Snow Festival / Yuki Matsuri (early February)
