Day Date Month Holiday
Friday 01 Jan New Year's Day
Thursday 24 Mar Holy Thursday
Friday 25 Mar Good Friday
Monday 28 Mar Easter Monday
Friday 22 Apr General Prayer Day
Thursday 05 May Ascension Day
Friday 06 May Day After Ascension
Monday 16 May Whit Monday
Monday 26 Dec Christmas Holiday
Source: http://www.nasdaqomxnordic.com/tradinghours/