You can change the date & time format in Google Sheets & Excel Online using this guide. Use different date & time formats in spreadsheets.

When it's time to set a date, you have a wide variety of options in spreadsheet programs such as Google Sheets and Microsoft Excel. There are essentially three types of dates you can set: dynamic ...

If you have to work with a date stamp in Microsoft Excel that includes date and time, you can use these simple expressions to extract both components, making them easier to work with.