6

I am in a learning phase. I could not find the command to change my time format from 12 hour to 24 hour. Can anyone please help me with this? Thank you!!

  • 1
    Do you want to get the time or set the time from terminal? – heemayl Jul 4 '16 at 11:29
  • Hi Abhishek. Could you give some feedback on the answers? Was it what you were looking for? please mention. – Jacob Vlijm Jul 5 '16 at 12:15
14

Time settings, as as shown in the panel, are set with gsettings. You can set 12/24 hrs by the commands:

12-hour:

enter image description here

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

24-hour:

enter image description here

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

options are:

locale-default
12-hour
24-hour
custom

The same trick on Mate

...requires a different command:

12-hour:

dconf write /org/mate/panel/objects/clock/prefs/format "'12-hour'"

and, as one would expect, 24-hour:

dconf write /org/mate/panel/objects/clock/prefs/format "'24-hour'"

N.B. tested on Mate 16.04 by @Zana (thanks!)

|improve this answer|||||
  • I like this answer a lot (I upvoted it also) but in MATE I get 'no such schema' :( and in fact gsettings list-recursively | grep time-format returns nothing at all. I wonder how I can do it... – Zanna Jul 4 '16 at 13:36
  • @Zanna, what version of Mate do you run? I found two settings that should work if settings made sense, but they don't change a thing on my VM: gsettings set org.gnome.desktop.interface clock-format 12h and dconf write /org/mate/panel/objects/clock/prefs/format "'12-hour'". (Mate 15.10) – Jacob Vlijm Jul 4 '16 at 15:57
  • First one does nothing for me either (even on reboot), but dconf write /org/mate/panel/objects/clock/prefs/format "'12-hour"' works instantly (I undid it - I hate 12 hr clock haha) – Zanna Jul 4 '16 at 19:14
  • 1
    Correct me if I am wrong but I tried "'12-hour"' and was unable to run till I did "'12-hour'" although my time still the same. Is that a typo in the answer? – George Udosen Jan 21 '17 at 18:37
  • 1
    Hi @George I am on mobile currently, but I am pretty sure you are right, I will edit it in. Thanks a lot! – Jacob Vlijm Jan 21 '17 at 19:54
8

It is not clear to me what exactly do you want. If you want just display the hour in your terminal window, you can try:

date +%R
date +%r
date +%H
date +%I
date +%H:%M
date +%I:%M

These are different time formats used to customize your time display. %R uses time with 24 hour and %r uses 12 hour format to display the whole time. If you want just hour with no minutes, etc. you can use %H (24 hour) or %I (12 hour). You can also combine them with minutes like that %H:%M, %I:%M. There are many other options. Take a look with man date.

Then if you want to change the system global date display go to Settings -> Region & Language.

There is also environment setting LC_TIME specifiying how time & date are displayed. In my case I can set it up in /etc/environment file like this:

LC_TIME="sl_SI.UTF-8"

You can also take a look at /etc/localtime. Try:

ls -l /etc/localtime

This file is linked to some file from /usr/share/zoneinfo/. Make a link like this:

ln -sf /usr/share/zoneinfo/Europe/Ljubljana /etc/localtime

and your local settings will be set to European Ljubljana, for instance. Fell free to use any other file from /usr/share/zoneinfo/. However, I believe this last settings is only setting for the timezone and not how the date & time are displayed.

|improve this answer|||||
  • I've linked /etc/localtime to the appropriate timezone, but I still get a 12-hour format (but the right timezone offset from GMT). I have no LC* or other variables set. (I get the correct output with LC_TIME=..... date, but I would like to have 24-hour time as the default. – Ketil Malde Jan 5 at 15:21
  • 1
    Take a look here askubuntu.com/questions/918973/…, how to setup LC_TIME. – nobody Jan 6 at 7:33
  • Thanks. It might be that the locale needs to be "enabled". However, I discovered that LANG was set to en_US.UTF-8 in my shell, 'unset'ing this environment variable changed the output of date to 24h format. (I haven't figured out how it got set in the first place, though.) – Ketil Malde Jan 7 at 9:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for?Browse other questions tagged or ask your own question.