Hi all
I am trying to automatically add a 6 month review date to a start date, it is working fine until a start date is past June, to which I get a #invalid value error. The formula I am using is:
=DATE(YEAR(A2),MONTH(A2)+6,DAY(A2))
So 1/6/19 becomes 1/12/19 but if I try with 1/7/19 I get #invalid value instead of 1/1/20.
Can anyone help????
Many thanks
Issy