Subtraction is the easiest way to count days between two dates in Excel. You can use the arithmetic operator – (minus sign) to subtract one date from another to find the number of days between them.

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.

Microsoft Excel remains a powerful tool for data analysis and manipulation, and staying up-to-date with the latest formulas is crucial for maximizing your productivity and improving your spreadsheets.