Set correct timezone in Kindle linux?

iamagloworm · 03-28-2022, 06:16 AM

Hello.

I have my Kindle PW3 on 5.13.3. Specifically, I wanted to make sue of the Literary Clock project.

It is relatively simple and working as expected, except that the time is two hours behind.

I am in CEST (Central European Summer Time) and have set my Kindle in the GUI to the correct time.

The problem is the Linux system thinks I am in EEST and I cannot figure out how to change it.

Code:

[root@kindle system]# date; date -u; hwclock -r
Mon Mar 28 11:09:34 EEST 2022
Mon Mar 28 09:09:34 UTC 2022
Mon Mar 28 09:09:35 2022  0.000000 seconds

Can anyone advise me on how to set the correct TZ? Thanks!

Code:

[root@kindle system]# uname -a
Linux kindle 3.0.35-lab126 #2 PREEMPT Fri Sep 25 23:12:57 UTC 2020 armv7l GNU/Linux

NiLuJe · 03-28-2022, 01:27 PM

There's a settz script that takes... some kind of weird data as input (IIRC, it's the delta to UTC in minutes or something), check it out

.

In the same vein, prefer setdate to doing stuff manually, as it'll update the UI properly (and that one takes an UTC epoch as input).

iamagloworm · 03-28-2022, 05:00 PM

Interesting, thanks. Though I am not sure what I should do with this now as it looks correct?

Code:

[root@kindle timelit]# settz
+0200

Code:

[root@kindle timelit]# setdate
sh: 1590969600: unknown operand
system: E setdate:badchange:old=1648497538,new=,delta=-1648497538:

NiLuJe · 03-28-2022, 07:43 PM

I don't see any kind of valid input being sent to either of those ;p.

shamanNS · 03-29-2022, 09:35 AM

settade doesn't set / fix correct timezone.
There is tzselect but Kindle firmware is missing needed files in /usr/share/zoneinfo.

Using @knc1's KUAL extension results in date command output showing "AMZ" as timezone.

NiLuJe · 03-29-2022, 06:19 PM

settz leaving stuff in a custom-ish timezone does sound familiar, yeah

.

(You can just push your own timezone file from a *nix system to the device, though).

mergen3107 · 03-30-2022, 01:40 AM

When I had my PW3 on hand, I did replace the /var/local/system/tz file, it is for time zones. I replaced it with the same one from Ubuntu to have proper Dst switch.

03-28-2022, 06:16 AM	#1
iamagloworm Connoisseur Posts: 60 Karma: 10 Join Date: Apr 2013 Device: Kindle Paperwhite 3 (Manga)	Set correct timezone in Kindle linux? Hello. I have my Kindle PW3 on 5.13.3. Specifically, I wanted to make sue of the Literary Clock project. It is relatively simple and working as expected, except that the time is two hours behind. I am in CEST (Central European Summer Time) and have set my Kindle in the GUI to the correct time. The problem is the Linux system thinks I am in EEST and I cannot figure out how to change it. Code: [root@kindle system]# date; date -u; hwclock -r Mon Mar 28 11:09:34 EEST 2022 Mon Mar 28 09:09:34 UTC 2022 Mon Mar 28 09:09:35 2022 0.000000 seconds Can anyone advise me on how to set the correct TZ? Thanks! Code: [root@kindle system]# uname -a Linux kindle 3.0.35-lab126 #2 PREEMPT Fri Sep 25 23:12:57 UTC 2020 armv7l GNU/Linux

03-28-2022, 05:00 PM	#3
iamagloworm Connoisseur Posts: 60 Karma: 10 Join Date: Apr 2013 Device: Kindle Paperwhite 3 (Manga)	Interesting, thanks. Though I am not sure what I should do with this now as it looks correct? Code: [root@kindle timelit]# settz +0200 Code: [root@kindle timelit]# setdate sh: 1590969600: unknown operand system: E setdate:badchange:old=1648497538,new=,delta=-1648497538:

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03-28-2022, 01:27 PM	#2
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	There's a settz script that takes... some kind of weird data as input (IIRC, it's the delta to UTC in minutes or something), check it out . In the same vein, prefer setdate to doing stuff manually, as it'll update the UI properly (and that one takes an UTC epoch as input).

03-28-2022, 07:43 PM	#4
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	I don't see any kind of valid input being sent to either of those ;p.

03-29-2022, 09:35 AM	#5
shamanNS Wizard Posts: 1,138 Karma: 12345678 Join Date: Feb 2010 Location: Serbia Device: Kindle PW5, Kobo Libra 2, Kindle PW1	settade doesn't set / fix correct timezone. There is tzselect but Kindle firmware is missing needed files in /usr/share/zoneinfo. Using @knc1's KUAL extension results in date command output showing "AMZ" as timezone.

03-29-2022, 06:19 PM	#6
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	settz leaving stuff in a custom-ish timezone does sound familiar, yeah . (You can just push your own timezone file from a *nix system to the device, though).

03-30-2022, 01:40 AM	#7
mergen3107 Wizard Posts: 1,557 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	When I had my PW3 on hand, I did replace the /var/local/system/tz file, it is for time zones. I replaced it with the same one from Ubuntu to have proper Dst switch.

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