How to Calculate the Midpoint of Two Dates in Excel. When you enter a number into an Excel cell that looks like a date, such as "Jun-1" or "6/1," Excel automatically adjusts the format of the cell ...

If you want to calculate how much time is left until a certain expiry date, you can use the DATEDIF function. This function returns the difference between two dates in terms of days, months, or years.

Open a new Microsoft Excel 2010 spreadsheet. Click on cell A1 and enter the earliest date and time from where you want to count. Enter the date first, then press "Space" and enter the time using a ...

If you need to check for the number of leap years between two dates in Excel, please read through this article. A leap year has one day more than a non-leap year, but it impacts a lot of calculations.