It's easy to change the date format in Microsoft Excel. You just need to use the "Date" drop-down menu, which gives you plenty of options.

Here is a tutorial showing you how to change Date and Time formats (US, International, etc) on Windows 11 using Settings or Control Panel.

You can change the date format in Google Sheets and customize the appearance of calendar dates in a spreadsheet.

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