This has been one of Mozilla’s favorite featured extensions for some time, due to the fact that well… people like to know what time it is?

Here is a little more about FoxClocks from the developer:

You can set each clock’s colour, or even have a clock change colour during certain hours (perhaps green when it’s a good time to Skype your friends in Japan). Too much stuff in your statusbar? Move your clocks to a toolbar, or switch to ‘icon’ mode and hover over the FoxClocks icon to see your clocks.  FoxClocks’ Zone Picker tree lets you browse virtually all the world’s time zones by country, region or city. Enable automatic database updates and you’ll always have the right time.

One more neat feature of FoxClocks is if you have Google Earth installed, you can right click on a region’s clock and it will take you right there.  A simple addon to add a clock, or for travelers – to keep track of many clocks.  If this is an itch you have to scratch, you can now do so with Firefox.