FoxClocks is an extension for Firefox, Thunderbird and Sunbird which can conveniently add world times to your status bar or alternatively, any any toolbars that you're using.
FoxClocks is a great idea for anyone who has to travel widely or finds themselves constantly having to know what time it is in other regions to contact colleagues etc. You have various choices on which clocks you display in FoxClocks. If you prefer, you can simply set it so that a FoxClocks clock changes colour during certain hours - for example you can make your Tokyo clock turn green if you have to make an important call there and don't want to risk waking them out of bed!
You can browse time zones by country, region or city and if you enable automatic updates, you'll always have the right time (although your PC should update itself automatically anyway so this is no big deal). Other than that, there aren't many other customization options in FoxClocks but you can change the time formats to something more useful or familiar to you.
Foxclocks is an excellent time tracking tool for anyone that works across timezones or regularly calls people in other parts of the globe.
