DateTimeExtensions
Just a sample site of a possible usage of DateTimeExtensions nuget package.
Ísland (is-IS) change
Holidays
January 01 New Year
April 19 Palm Sunday
April 20 Good Friday
April 22 Easter
April 23 Easter Monday
May 01 May Day
May 31 Feast of the Ascension
June 07 Pentecost
June 11 Pentecost Monday
June 17 Republic's Day
August 03 Commerce's Day
December 25 Christmas
December 26 Christmas (2nd Day)