See the attached workbook
With
On Sheet1...
Col_A contains First Names (beginning in Row_2)
Col_B contains Last Names (beginning in Row_2)
Col_C contains Anniversary Dates (beginning in Row_2)
and
On Sheet2...
A1:L1 contains Jan, Feb,...Dec
This will list names with anniv dates in the same month s Row_1.
(ARRAY FORMULA...committed with CTRL+SHIFT+ENTER, instead of just ENTER)
Copy A2 into A3 and down as far as you need.
Copy that series of formulas and paste them under each month name.
Is that something you can work with?
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