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How to change TimeZone?



  • Device Firmware Version: 0.2.0 b196
    Web interface doesn't have 'Settings' page.

    alt text



  • @Alexandr-Didenko Omega2(+) (ie OpenWrt) stores the time zone inside the '/etc/TZ' file and it operates in the UTC time zone by default.
    So you should modify that file - more exactly the TZ variable - with ease on the Command Line. 😉
    The syntax of the TZ variable is documented here.
    You can find the possible values of TZ in this Time Zones Time Zones table.

    # Omega 2+ 0.2.0 b194
    
    root@Omega-99A5:~# ls -l /etc/TZ
    lrwxrwxrwx    1 root     root             7 Jul 31 16:32 /etc/TZ -> /tmp/TZ
    
    root@Omega-99A5:~# cat /etc/TZ
    GMT0
    
    root@Omega-99A5:~# date
    Tue Sep 18 10:30:31 GMT 2018
    

    To survive the power cycles and the reboot commands you should remove that symbolic link.

    For example the correct contents of '/etc/TZ' when located in Budapest (Central Europe, Hungary) with Daylight Saving Time would be:
    CET-1CEST,M3.5.0,M10.5.0/3

    root@Omega-99A5:~# rm /etc/TZ
    
    root@Omega-99A5:~# echo "CET-1CEST,M3.5.0,M10.5.0/3" > /etc/TZ
    
    root@Omega-99A5:~# ls -l /etc/TZ
    -rw-r--r--    1 root     root            27 Sep 18 12:31 /etc/TZ
    
    root@Omega-99A5:~# cat /etc/TZ
    CET-1CEST,M3.5.0,M10.5.0/3
    
    root@Omega-99A5:~# date
    Tue Sep 18 12:32:39 CEST 2018
    

    Unfortunately you should repeat these steps after every FACTORY RESET, firstboot and firmware up or downgrade.


    Here you are another method.
    This is maybe simpler better because you don't have to remove that symbolic link and - with the above TZ example - the result is same a little bit better.

    uci set system.@system[0].timezone='CET-1CEST,M3.5.0,M10.5.0/3'
    uci commit system
    reboot

    You should repeat these steps after every FACTORY RESET or firstboot only.

    Good luck!


  • administrators

    @Alexandr-Didenko Since you're on the latest firmware, you also have the latest version of the onion command line tool.
    Connect to the command line and just run onion, in the output there will be a section describing how to use this tool to list out the possible timezones and then how to set the timezone for your device:

    Configure Device Time:
    	onion [OPTIONS] time list
    		List all available timezones and associated timezone string
    
    	onion [OPTIONS] time set <TIMEZONE> <TIMEZONE STRING>
    		Change the system timezone
    
    	onion [OPTIONS] time sync
    		Update system time from the internet
    

    There's also a sync command you can use to force the Omega to update its system time from online NTP servers.
    Happy timezoning!



  • In my case; Istanbul is GMT+3 and I couldn't find the +3 for Istanbul and i create it myself. Details are here https://wiki.openwrt.org/doc/uci/system (Time Zones
    section)

    uci set system.@system[0].timezone='EET-2EEST'
    uci set system.@system[0].zonename='Istanbul'
    uci commit
    echo "EET-2EEST" > /etc/TZ
    

    this works without reboot.



  • @Lazar-Demin Great! 🙂
    Maybe some "announcement" in the Omega Firmware Changelog would be nice. For example:

    0_1537313334858_Changelog_b192.png



  • @unique1984 You can find Istanbul in v0.2.0 192 and above:

    onion time list | grep Istanbul
    Europe/Istanbul EET-2EEST,M3.5.0/3,M10.5.0/4
    

    and really simple to set TZ for you with this command:
    onion time set Europe/Istanbul EET-2EEST,M3.5.0/3,M10.5.0/4



  • @unique1984 OK! You are right 🙂
    I checked your TZ at Current Local Time in Istanbul, Turkey and Time Zone in Istanbul, Turkey.
    It's UTC/GMT +3 and no Daylight Saving Time in 2017 — 2019.
    (I didn't know this and misunderstood the TZ of Istanbul, Turkey vs. "+3 for Istanbul" 😉



  • @György-Farkas This is a special case and I hope someone who suffering for this, can solve it in this way if those are having trouble in Turkey. Thank you.



  • @Lazar-Demin

    root@Omega-6B4C:~# onion time list | grep Moscow
    

    show

    Europe/Moscow   MSK-4
    

    And this is error!
    We have +3 zone

    This command help me:

    onion time set Europe/Moscow MSK-3
    


  • @Alexandr-Didenko
    Thanks for your report.
    I have created an issue for it in the Onion repo and submitted a bug fix for Onion to integrate should they wish to do so.



  • @cas As you know @Lazar-Demin (I think he is the firmware maintainer) should update the TZ strings in the onion command line tool occasionally because some of them becomes outdated from time to time.

    BTW There are "updated" OpenWrt TZ strings here and you can see the TZ string of Europe/Moscow has already corrected (but - for example - the TZ string of Europe/Istanbul has not).


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