From Utech Computer Solutions:
Place digital or analog world clocks on your desktop. They will quietly tick away, ready for you when you need them. They even hide automatically and come back instantly as needed, no clicking required. To create clocks, just move your mouse over the world map to find the times and names of more than 850 places around the globe. Click anywhere on the map or start typing a name and you'll instantly see the current time of that location on the world clock. If you want to know when it's best to call someone in a different time zone, turn on the time wheel. Appearance and behavior are fully customizable. You can even have a different clock color for night times.