Override the Gnome Shell clock with a new time format or text of your choice. Works with new versions of Shell such as 3.18.

If you're looking to use this extension, don't get it from here; this is for developers. To add this extension to your desktop, click here to get it from extensions.gnome.org.

Gnome Shell doesn't permit many changes to the format of its clock; in particular, it's not possible to remove it completely or to add text around it. That's what this extension is for: you can set the clock's "format string" to change how the Gnome Shell clock is displayed (do you want it as HH:MM? HH.MM? "10:37:21 am"?), including setting it to just a fixed string (for example, a bell) so you have somewhere to click to see notifications and calendar but no clock on-screen.

For techies, we use the strftime codes to specify actual times in your clock string, with a %f addition to mean "a little Unicode clock character" (thanks to dsboger for that!)

Note that we still try to honour Gnome Shell's clock settings. So if you expect your clock to show seconds (or to update once a second, rather than once a minute) then you'll need to have turned on "show seconds" in Gnome Tweak Tool (under Top Bar) (or the terminal way).