Statusbar Clock
Statusbar Clock is a Firefox Extension.
You can download it from the developer’s website or the Firefox Add-Ons site.
After installing Statusbar Clock, you’ll notice the following in the bottom-right corner of your status bar:
You can customize the formats for both the date and time. Just right-click on the date/time in your status bar and choose “Customize”:
The Options Window will open and you can choose from many different formats:
You can also change the location of the date/time display in your status bar. Once again, right-click on date/time and choose “Move”:
You can place the date/time to the right or left of the other objects in your status bar:
