Thursday 01 Jan New Year's Day
Tuesday 06 Jan Epiphany
Monday 23 Feb Clean Monday
Monday 25 Mar 25th of March
Friday 10 Apr Good Friday
Sunday 12 Apr Easter Sunday
Monday 13 Apr Easter Monday
Friday 01 May Labor Day / May Day
Monday 01 Jun Holy Spirit Monday
Saturday 15 Aug Dormition of the Holy Virgin
Wednesday 28 Oct The Ochi Day
Friday 25 Dec Christmas Day
Saturday 26 Dec Synaxis of the Mother of God
Source: http://www.timeanddate.com/holidays/greece/2015#!hol=9