DATEDIF(), which means Date + Dif, is a compatibility function left over from Lotus 1-2-3 that Microsoft adopted in Excel version 2000, which is the only version that explains how this function works.

How to open and populate an Outlook appointment from inside Excel using VBA Your email has been sent It’s easy to import data from Excel into an Outlook item, such as a message or appointment, because ...

How to Use TODAY() to Highlight Fast-Approaching Dates in an Excel Sheet Your email has been sent Use Microsoft Excel's TODAY() function in simple expressions to highlight the current date and past ...