I have Months in Column A (from 1 for Jan to 12 for Dec) and Years in Column B.
I need to find the month corresponding to the earlier date.
For instance if my lowest year is 2004 found in B12 and B24, and A12=2 and
A24=8, the result should be 2
The problem is that I can have several occurrences of the same year, so I
have tried to create a unique key using concatenate(Month,year) in Column C
and then using Index and Match.
But the concatenate formula does not create recognisable numbers.