How do I calculate holidays?

Question

I have an application that registers when people are sick and sends a notification to a manager at a certain number of workdays after this event.

I can use the properties of DateTime to skip weekends but how do I skip holidays?

I've read somewhere that church holidays are calculated from easter. But how? And how do I find easter in the first place?

Answer 1

Maybe a little too late but you can use my library Nager.Date. With my library you can calculate holidays for over 100 different countries. There is also a nuget package available.