When you use Microsoft Excel to store and analyze business data, your workbooks and worksheets often contain date information. Although your original data may need to display full month, day and year ...

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 representation of the day of the year. For example, January 1st, ...

If you need to calculate dates in your spreadsheets, Excel uses its own unique system, which it calls Serial Numbers. Every date (month, day, year) and time (hour, minute, and second) has an ...