Day Date Month Holiday Monday 2 Jan New Year's Day (Substitution for New Year's Day Sunday 1st Jan 2023) Tuesday 3 Jan Market Holiday Monday 9 Jan Coming of Age Day Thursday 23 Feb Emperor's Birthday Tuesday 21 Mar Vernal Equinox Wednesday 3 May Constitution Memorial Day Thursday 4 May Greenery Day Friday 5 May Children's Day Monday 17 Jul Marine Day Friday 11 Aug Mountain Day Monday 18 Sep Respect for the Aged Day Monday 9 Oct Sports Day Friday 3 Nov Culture Day Thursday 23 Nov Labor Thanksgiving Day Source: Japan Exchange Group