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

Making a date format change in Google Sheets is easy. Open a spreadsheet, type a date, and then highlight that specific date. You can also highlight an existing date in any spreadsheet.

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

Google Forms lets you collect and tally information more efficiently than paper--and Forms supports video, photos, and files, too. Here's how to get started.