Saturday 1 Jan New Year's Day
Wednesday 2 Feb Seollal Holiday Day 1
Thursday 3 Feb Seollal Holiday Day 2
Friday 4 Feb Seollal Holiday Day 3
Tuesday 1 Mar Independence Movement Day
Thursday 5 May Children's Day
Tuesday 10 May Buddha's Birthday
Monday 6 Jun Memorial Day
Monday 15 Aug Liberation Day
Sunday 11 Sep Mid-Autumn Festival Day 1
Monday 12 Sep Mid-Autumn Festival Day 2
Tuesday 13 Sep Mid-Autumn Festival Day 3
Monday 3 Oct National Foundation Day
Sunday 25 Dec Christmas Day
Source: http://www.timeanddate.com