DateTime is a useful freeware Windows utility that allows users with an Internet connection to accurately set their system's date and time. It is easy to use. With just a few clicks of your mouse you can fetch the current date and time from the Internet Date/Time host. You can compare new values with your system's date and time. You can easily update your PC clock settings with new, correct values.
CKZ Time Clock is a small, reliable and easy
Date and Time Calculator 1.00.0000
Advanced Date and Time Calculator.
An events countdown timer and time tracker.
A full-featured date time calculator/counter.
Add or subtract times and dates in Excel.