DateTimeExtensions
Just a sample site of a possible usage of DateTimeExtensions nuget package.
New Zealand (en-NZ) change
Holidays
January 01 New Year
January 02 Day after New Year's Day
January 04 Day after New Year's Day Observed
February 06 Waitangi Day
April 09 Good Friday
April 11 Easter
April 12 Easter Monday
April 25 Anzac Day
June 07 Queen's Birthday
October 25 Labour Day
December 25 Christmas
December 26 Boxing Day
December 27 Christmas Observed
December 28 Boxing Day Observed