Open the spreadsheet with Microsoft Excel on your computer. After that, you should see a column containing all the dates. You need to select all the cells that have a date. In other words ...

Before you add any calculations or checkboxes, you need to tell Excel that certain columns (in ... Alternatively, to display the time and date together, click "Custom" in the Format Cells dialog ...

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 ...

When you enter a date that's formatted with slashes, Excel will recognize it as a date. For example, Excel will automatically choose the date format for a cell that contains 11/11/19. You can set ...