Excel (now there’s a misnomer)
Treats the year 1900 as a leap year because Microsoft’s main aim when they introduced it, was to kill Lotus 123. Lotus (on the PC) replaced VisiCalc on the Apple II who’s epoch was 1 Jan 1904, so VisiCalc didn’t go back that far. Microsoft’s original spreadsheet Multiplan didn’t cut it, so Excel (originally introduced for the Macintosh) was rapidly promoted to run on Windows... and spreadsheet-jockeys attempt to run major business with it...
Biting the hand that feeds IT
