DateTimeExtensions
Just a sample site of a possible usage of DateTimeExtensions nuget package.
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Holidays
January 01 New Year
January 06 Epiphany
April 23 Good Friday
April 25 Easter
April 26 Easter Monday
May 01 International Workers' day
June 03 Feast of the Ascension
June 06 National Day
June 13 Pentecost
June 25 Midsummer Eve
June 26 Midsummer Day
November 06 All Saint's Day
December 24 Christmas Eve
December 25 Christmas
December 26 Boxing Day
December 31 New Year's Eve