Wednesday 01 Jan New Year's Day
Monday 06 Jan Epiphany Monday 03 Mar Ash Monday Tuesday 25 Mar National Holiday Friday 18 Apr Good Friday (Orthodox - Catholic) Monday 21 Apr Easter Monday (Orthodox - Catholic)Thursday 01 May Labour Day Holiday
Monday 09 Jun Whit Monday Friday 15 Aug Assumption Day Tuesday 28 Oct National HolidayWednesday 24 Dec Christmas Eve
Thursday 25 Dec Christmas Day
Friday 26 Dec Second Day of ChristmasWednesday 31 Dec New Year's Eve (Half holiday)
Source: http://www.ase.gr/content/en/ann.asp?AnnID=55002