Thursday 05 Apr Moundy Thursday
Friday 06 Apr Good Friday
Monday 09 Apr Easter Monday
Friday 04 May General Prayer Day
Thursday 17 May Ascension Day
Friday 18 May Bank Holiday
Monday 28 May Whit Monday
Tuesday 05 Jun Constitution Day
Monday 24 Dec Christmas Eve
Tuesday 25 Dec Christmas Day
Wednesday 26 Dec Boxing Day
Monday 31 Dec New Year's Eve
Source: http://www.nasdaqomxnordic.com/tradinghours/