Anuko World Clock
Anuko World Clock is a program for Windows that replaces the regular system clock with several time zones in which you can choose. Knowing the time around the world has never been simpler. Whether you are an enterprise in need of an efficient timezone monitoring utility, or a home user with a loved-one in another country, or stock and currency trader, this clock is a software you should not live without.
In the example below, you can see that Sydney, Tokyo, and London markets are closed, while New York is open.
World Clock with major Forex markets in taskbar