Hi, I have a sheet containing collums with month an weeks. I try to find out which collum the first week start and where te last week the same mont ends.

Let say A5:E5 is filled with december in each cell. The row below (A6:E6) says week 48, week 49, week 50, week 51, week 52.

I want a formula telling me de Cell reference where desember begins en where it ends. In my Excample (A5 and E5). If Possible, I also could prefer that the cell reference was to rows below start/end. In my example (A7 and E7)

Thanks for any help
elad
Norway