The COUNTIFS function in Excel is a powerful and versatile tool for counting cells based on multiple criteria. It offers a significant advantage over the COUNTIF function, which is limited to ...

You only need to edit your dates to solve your problem. (Note: By default, Excel displays four-digit years for all dates, so ordinarily you should have noticed this problem right away.

This approach produces a date-based result that follows the assumptions you specify in Excel for handling two-digit years that occur before and after 29. However, you still face the basic problem that ...