年countryregionlanguage1月 New Year's Day January 2 January 3 Coming of Age Day2月 Foundation Day Foundation Day (obs.)3月 Vernal Equinox Day4月 Shōwa Day Shōwa Day (obs.)5月 Constitution Memorial Day Greenery Day Children's Day6月7月 Marine Day8月 Mountain Day9月 Respect-for-Aged Day Autumnal Equinox Day Autumnal Equinox Day (obs.)10月 Health and Sports Day11月 Culture Day Labor Thanksgiving Day12月 Emperor's Birthday Emperor's Birthday (obs.) New Year's Eve