Probably the easiest way, would be to add the even 4 weeks that would lead to a month away, then add 1-3 days, depending on how many days are in each month, to find the exact week day.
Like: Thursday, April 1st → ____, May 1st
Thursday + 2 days (because 4x7=28, and there are 30 days in april) you’ll get:
Saturday, May 1st
I hope this helps and makes some sort of sense haha
