DateDiff is a calendar program that allows you to select two different dates, then calculates the number of days, hours, minutes and seconds between them. It can also determines what the date is X number of days before or after a given date.

DateDiff Features:
1. Determine number of days between two dates
2. Determine date X days before or after a given date
3. Date and plus/minus values saved from one use to the next
4. Jump directly to month
5. Fast scroll through years
6. Week of year displayed in left column on calendars

The license of this software is Freeware, you can free download and free use this calculator software.