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 03 New Year Observed
January 04 Day after New Year's Day Observed
February 06 Waitangi Day
March 25 Good Friday
March 27 Easter
March 28 Easter Monday
April 25 Anzac Day
June 06 Queen's Birthday
October 24 Labour Day
December 25 Christmas
December 26 Boxing Day
December 27 Christmas Observed