This month’s column shows how to use the remarkably versatile AGGREGATE function in Excel.

How many days? Excel doesn’t offer a function that returns the total number of days in a specified month, and before EOMONTH () came around, an expression to do so was complex.

How to use a DAYS function in Excel In this tutorial, we will find the number of days between the dates in the month. Click the cell where you want to see the result, then type =DAYS (A3, B3).

Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions.