2012 Market Holidays: Greece

Friday 06 Jan Epiphany Monday 27 Feb Ash Monday Friday 06 Apr Good Friday (Catholic) Monday 09 Apr Easter Monday (Catholic) Friday 13 Apr Good Friday (Orthodox) Monday 16 Apr Easter Monday (Orthodox) Tuesday 01 May Labour Day Monday 04 Jun Whit Monday Wednesday 15 Aug Assumption Day Monday 24 Dec Christmas Eve Tuesday 25 Dec Christmas Day Wednesday 26 Dec Second Day of Christmas Monday 31 Dec New Year's Eve (Half holiday)

Source: http://www.ase.gr/content/en/ann.asp?AnnID=55002