DAY
Date & timeExcel 2007The day-of-month of a date as 1–31.
Syntax
DAY(serial_number)
Examples
=DAY(EOMONTH(A2, 0))
→ days in A2's month
Related functions
More Date & time functions
Syntax follows Microsoft’s documentation. Examples are written to be pasted into a cell and checked. Argument separators may be ; in your locale. The AI explainer runs on a free community model — verify anything important.