年countryregionlanguage1月 New Year's Day New Year's Day (obs.) January 2 (obs.) Coming of Age Day2月 Foundation Day Emperor's Birthday3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 New Year's Eve