I was wondering how complex it gets if I wanted to add 1 year but subtract 1 day?
The idea being that if a course started on Monday 17th Sept 2018 then the same date for the following year would be Monday 16th Sept 2019
I was wondering how complex it gets if I wanted to add 1 year but subtract 1 day?
The idea being that if a course started on Monday 17th Sept 2018 then the same date for the following year would be Monday 16th Sept 2019