Help > When the time is..
This feature is useful when you want to see other local times for any given time. For instance, if you have a meeting in Los Angeles at 4 pm and want to see what time it will be across the globe, just right click on Los Angeles, select "When the time is.." and enter 4pm.
All of the clocks will automatically display the local time and date when it is 4 pm in Los Angeles. As soon as you close the window, all of the clocks revert back to their normal time.