Thursday 01 Jan New Year's Day
Monday 12 Jan Coming of Age Day
Wednesday 11 Feb National Foundation Day
Saturday 21 Mar Spring Equinox
Wednesday 29 Apr Showa Day
Sunday 03 May Constitution Memorial Day
Monday 04 May Greenery Day
Tuesday 05 May Children's Day
Wednesday 06 May Constitution Memorial Day observed
Monday 20 Jul Sea Day
Monday 21 Sep Respect for the Aged Day
Tuesday 22 Sep Bridge Public holiday
Wednesday 23 Sep Autumn Equinox
Monday 12 Oct Sports Day
Tuesday 03 Nov Culture Day
Monday 23 Nov Labor Thanksgiving Day
Wednesday 23 Dec Emperor's Birthday
Source: https://www.timeanddate.com/holidays/japan/2015#!hol=9