Again, thanks! Small request: would you explain the formula, especially the "Choose" part and the numbers that follow? Thanks!
Here ya go...
A2 = some date
=A2-30+CHOOSE(WEEKDAY(A2-30),1,0,6,5,4,3,2)
You want the date for the next Monday if the date minus 30 days is already not a Monday.
We get the date:
A2-30
Then we test what weekday that is:
WEEKDAY(A2-30)
That will return a number from 1 to 7 where:
1 = Sunday
2 = Monday
3= Tuesday
4 = Wednesday
5 = Thursday
6 = Friday
7 = Saturday
We then use that number to CHOOSE how many days we need to add to the date, A2-30, to give us the next Monday date.
Weekday 1 (Sunday) add 1 day
Weekday 2 (Monday) add 0 days
Weekday 3 (Tuesday) add 6 days
Weekday 4 (Wednesday) add 5 days
Weekday 5 (Thursday) add 4 days
Weekday 6 (Friday) add 3 days
Weekday 7 (Saturday) add 2 days