Day Date Month Holiday
Friday 01 Jan New Year's Day
Wednesday 23 Mar Half trading day (Wednesday beforeEaster)
Thursday 24 Mar Maundy Thursday
Friday 25 Mar Good Friday
Monday 28 Mar Easter Monday
Thursday 05 May Ascension Day
Monday 16 May Whit Monday
Tuesday 17 May Constitution Day
Monday 26 Dec Boxing Day
Source: http://www.oslobors.no/ob_eng/Oslo-Boers/About-Oslo-Boers/Opening-hours