GUII've read the three solutions on How to change time display to 12h time format in Ubuntu and set my time to 24 hour in the GUI and using gnome-tweak and I've managed to change my time and date format nicely, but cannot set 24 hour clock: the "AM" is still showing. This is in spite of

  1. "Time Format" being set to "24-hour" within the GUI, (see figure above)

  2. Entering in the command gsettings set org.gnome.desktop.interface clock-format '24h'

  3. and setting within browse to org > gnome > desktop > interface > clock-format within dconf-editor, and change the format to '24h'

How can I get the 24 hour clock format, is there some other setting that could be contradicting these three methods?

  • 1
    how did you set the time to 24 hour via GUI? can you attach a pic which is showing 24hr format with AM? – UnKNOWn Nov 20 '19 at 16:53
  • @PRATAP I've added a screenshot of the GUI. I followed Open Settings >Details> Date & Time. – con Nov 20 '19 at 16:59
  • yes.. thats clear.. can you post the output of this command? gsettings get org.gnome.shell enabled-extensions – UnKNOWn Nov 20 '19 at 17:01
  • @PRATAP con@VB:~/Pictures$ gsettings get org.gnome.shell enabled-extensions gives @as [] – con Nov 20 '19 at 17:04
  • gsettings get org.gnome.desktop.interface clock-format whats the output of this command? – UnKNOWn Nov 20 '19 at 17:07

since you are using GNOME-Flashback

run the below command

gsettings set com.canonical.indicator.datetime time-format 24-hour

for 12-hour

gsettings set com.canonical.indicator.datetime time-format 12-hour

or to reset to default value

gsettings reset com.canonical.indicator.datetime time-format

Alternatively you can use dconf-editor tool (sudo apt install dconf-editor)

enter image description here

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