"I'll keep this in mind next time I take a shortcut": Excel thinks 1900 was a leap year, and it probably always will due to one small decision from the '80s
… It was a matter of compatibility between the two programs, as Microsoft wanted to ensure that users could move Lotus 1-2-3 worksheets into Excel without issue. This issue has persisted and can still be found in the most recent version of Excel for Microsoft 365 . …