Or try this:
=AND(DATE(YEAR(TODAY()),MONTH(B1),DAY(B1))<=TODAY()+31,DATE(YEAR(TODAY()),MONTH(B1),DAY(B1))>=TODAY())
AliGW on MS365 Insider (Windows) 64 bit
A B 1 2John Smith 28/11/1972 3Jane Jones 07/03/1968 4Mary Turner 03/04/1958
Sheet: Sheet1
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