Day Date Month Holiday
Friday 01 Jan New Year's Day
Wednesday 06 Jan Epiphany
Friday 25 Mar Good Friday
Monday 28 Mar Easter Monday
Thursday 05 May Ascension Day
Friday 24 Jun Midsummer's Eve
Tuesday 06 Dec Independence Day
Monday 26 Dec Christmas Holiday
Source: http://www.nasdaqomxnordic.com/tradinghours/