How To: Convert Day Number to Month and Day

I needed to convert the day number, that is, what day it is between 1 and 365, into a month and day without using Calendar / DateTime classes and such today, so I knocked up a few simple functions that work assuming it’s not a leap year (i.e. that February has 28 days).

Here they are if they’re of any use to you:

A touch cheap, but it gets the job done.