If you work with people in multiple time zones, it can be difficult figuring out what time it is where they live. If you need a hand, Windows has the tools you need built right in.
The system tray is home to a single digital clock by default. You can add up to two more clocks so you can quickly check the time in a couple of other time zones. Just right click the clock, select Adjust Date/Time and move to the Additional Clocks tab.
Tick the first "Show this clock" box, use the drop down menu to select the time zone you're interested in, and then type a suitable label. Repeat the process for a second additional clock if you need to and click OK.
When you need to check the time on your co-workers' home turf, click the system tray clock and a popup with three analogue clocks appears. You can also hover your mouse over the clock for a digital popup instead.