In case you do not want to use the predefined date or time format, you can change them in Google Sheet and Excel Online. For your information, you do not need to use an add-on or any other third ...

If you type "1/1/19" into a cell with the long date format, Excel will change it to the expanded date. 4. Excel offers many other date format choices. In the cell format menu, click on "More ...

This is because people often use dates in Excel tables, so the program thinks it's being helpful by saving you the time it would take to change the number format to Date manually. There are two ...