How To: Allow only Monday dates in a cell in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 593rd installment in their series of digital spreadsheet magic tricks, you'll learn how to add data validation to allow only Monday dates in a cell using the custom option and the WEEKDAY function.