DateTimeExtensions
Just a sample site of a possible usage of DateTimeExtensions nuget package.
Ísland (is-IS) change
Holidays
January 01 New Year
April 16 Maundy Thursday
April 17 Palm Sunday
April 19 Easter
April 20 Easter Monday
April 21 First Day of Summer
May 01 May Day
May 28 Feast of the Ascension
June 05 Pentecost
June 08 Pentecost Monday
June 17 Republic's Day
August 01 Commerce's Day
December 25 Christmas
December 26 Christmas (2nd Day)