Thursday 01 Jan New Year's Day
Tuesday 06 Jan Epiphany Monday 23 Feb Ash MondayWednesday 25 Mar National Holiday
Friday 03 Apr Good Friday Monday 06 Apr Easter Monday Friday 10 Apr Orthodox Good Friday Monday 13 Apr Orthodox Easter Monday Friday 01 May Labour Day Holiday Monday 01 Jun Whit MondayWednesday 28 Oct National Holiday
Thursday 24 Dec Christmas Eve
Friday 25 Dec Christmas DayThursday 31 Dec New Year's Eve (Half holiday)
Source: http://www.helex.gr/documents/10180/25792/2015_Trading_Calendar/dfdb2b21-9171-499e-9726-894badcfa974