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

Use this step-by-step guide to copy format in Excel worksheet columns and rows and improve your data presentation and organization.

Use Microsoft Excel's TODAY() function in simple expressions to highlight the current date and past and future dates.

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