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

Using an Excel spreadsheet you can input the dates and descriptions of these events in a random order and then reorganize your spreadsheet data by date.

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

How to Convert 5-Digit Julian Dates to Regular Dates in Excel. The Julian date format is a five digit number broken into two parts: a two-digit representation of the year followed by a three-digit ...