January
1 Jan
New Year's Day
national-holidayGantan
12 Jan
Coming of Age Day
national-holidaySeijin no Hi
February
11 Feb
National Foundation Day
national-holidayKenkoku Kinen no Hi
March
20 Mar
Vernal Equinox Day
national-holidayShunbun no Hi
April
29 Apr
Showa Day
national-holidayShowa no Hi
May
3 May
Constitution Memorial Day
national-holidayKenpo Kinenbi
4 May
Greenery Day
national-holidayMidori no Hi
5 May
Children's Day
national-holidayKodomo no Hi
July
20 Jul
Marine Day
national-holidayUmi no Hi
August
11 Aug
Mountain Day
national-holidayYama no Hi
September
21 Sep
Respect for the Aged Day
national-holidayKeiro no Hi
23 Sep
Autumnal Equinox Day
national-holidayShubun no Hi
October
12 Oct
Sports Day
national-holidaySupotsu no Hi
November
3 Nov
Culture Day
national-holidayBunka no Hi
23 Nov
Labour Thanksgiving Day
national-holidayKinro Kansha no Hi
Notes
Japan has 16 national holidays. Golden Week (late April/early May) is a major holiday period. Many companies close between New Year's and January 3.