# CTZU - no timezone update

**URL:** <https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853>\
**Category:** HL78\
**Created:** [September 9, 2022, 11:18am UTC](https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853 "2022-09-09T11:18:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![darek.benert](https://avatars.discourse-cdn.com/v4/letter/d/ba9def/32.png) [@darek.benert](https://forum.sierrawireless.com/u/darek.benert)\
**Post date:** [September 9, 2022, 11:18am UTC](https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853/1 "2022-09-09T11:18:33Z")

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Hi,  
I’ve started to work with HL7800 (4.6.9.4).  
I’m in Poland, so my timezone is GMT+1 and we have daylight saving - now it’s GMT+2  
Orange supports NITZ, beacuse any other modems (Quectels, Thales) return +CTZU response, but HL7800 not:  
0007:80\> AT+CTZR?  
0007:80\< +CTZR: 2  
0007:80\< OK  
0007:90\> AT+CTZU?  
0007:90\< +CTZU: 1  
0007:90\< OK  
0034:09\< +KSUP: 0  
0035:75\< +CEREG: 2  
0036:42\< +SIM: 0  
0036:42\> AT+CCLK?  
0036:42\< +CCLK: “00/00/00,00:00:00-0”  
0036:43\< OK  
0045:37\< +CEREG: 1,“D309”,“05322A10”,7,“00101101”,“01000111”  
0045:37\< +CEREG: 4,1,“D309”,“05322A10”,7,“00101101”,“01000111”  
0045:48\> AT+CCLK?  
0045:48\< +CCLK: “22/09/09,12:50:27+0”  
0045:48\< OK

CTZU is set to 2  
" 2 — Enable time zone change event reporting with URC +CTZE: ,,[] "  
so I should get +CTZE: …, but I get no URC with time.

What am I doing wrong?

Regards  
Darek

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<div class="post-metadata">

**Author:** ![jerdung](https://avatars.discourse-cdn.com/v4/letter/j/82dd89/32.png) [@jerdung](https://forum.sierrawireless.com/u/jerdung)\
**Post date:** [September 13, 2022, 11:12am UTC](https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853/2 "2022-09-13T11:12:03Z")

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Hi @darek.benert ,  
Welcome you to our community!  
Please share with me the specific step-by-step you did that the issue happens so I can recheck on my module.

Thanks,

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<div class="post-metadata">

**Author:** ![darek.benert](https://avatars.discourse-cdn.com/v4/letter/d/ba9def/32.png) [@darek.benert](https://forum.sierrawireless.com/u/darek.benert)\
**Post date:** [September 13, 2022, 8:25pm UTC](https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853/3 "2022-09-13T20:25:37Z")

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Ok - but next week, because I’m on vacation😀

Wysłano z telefonu / Sent from phone

-------- Oryginalna wiadomość --------  
Od: Jerdung via Sierra Wireless Forum [notifications@sierrawireless.discoursemail.com](mailto:notifications@sierrawireless.discoursemail.com)  
Do: darek.benert@wares.tech  
Temat: [Sierra Wireless Forum] [IoT Modules/HL78] CTZU - no timezone update

> ![](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/6/6bc620a93614d9c36213df5c53b431a343f47798.png "jerdung") | [jerdung](https://forum.sierrawireless.com/u/jerdung)  
> September 13 |
> 
> - | - |

Hi [@darek.benert](https://forum.sierrawireless.com/u/darek.benert) ,  
Welcome you to our community!  
Please share with me the specific step-by-step you did that the issue happens so I can recheck on my module.

Thanks,

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<div class="post-metadata">

**Author:** ![darek.benert](https://avatars.discourse-cdn.com/v4/letter/d/ba9def/32.png) [@darek.benert](https://forum.sierrawireless.com/u/darek.benert)\
**Post date:** [September 22, 2022, 11:34am UTC](https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853/4 "2022-09-22T11:34:16Z")

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Hi,  
please look at the logs below.  
I set CTZU and CTZR to 0, clock to fake time, then restart modem for sure.  
After wakeup the modem I set CTZU=1 and CTZR,=2, but I I do not see any URC.  
Time is synchronised, but CCLK response is cut and not correct - in Poland it should be “+08”, not “-0”

0018:04\> AT+CTZR=0  
0018:06\< OK  
0018:16\> AT+CTZU=0  
0018:19\< OK  
0018:50\> AT+CCLK=“20/01/01,00:00:00+08”  
0018:53\< OK  
0019:72\> AT+CPWROFF  
0019:73\< OK  
[0021:36] Modem off  
[0030:46] Modem on  
0035:22\< +KSUP: 0  
0038:33\< +SIM: 0  
0045:47\< +CEREG: 0  
0045:49\< +CEREG: 2  
0045:98\< +CEREG: 1,“D309”,“05322A10”,7,“00101101”,“01000111”  
0056:23\> AT+CTZU=1  
0056:44\< OK  
0056:54\> AT+CTZR=2  
0056:75\< OK  
0056:86\> AT+CCLK?  
0056:86\< +CCLK: “20/01/01,00:00:37+0”  
0056:86\< OK  
0065:48\> AT+CCLK?  
0065:48\< +CCLK: “20/01/01,00:00:45+0”  
0065:49\< OK  
0067:64\> AT+CCLK?  
0067:64\< +CCLK: “22/09/22,13:05:29-0”  
0067:64\< OK  
0078:42\> AT+CCLK?  
0078:42\< +CCLK: “22/09/22,13:05:39-0”

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<div class="post-metadata">

**Author:** ![jerdung](https://avatars.discourse-cdn.com/v4/letter/j/82dd89/32.png) [@jerdung](https://forum.sierrawireless.com/u/jerdung)\
**Post date:** [September 26, 2022, 11:22am UTC](https://forum.sierrawireless.com/t/ctzu-no-timezone-update/27853/5 "2022-09-26T11:22:09Z")

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Hi @darek.benert  
I could reproduce the behavior as your steps on my module. So, I think it’s better to raise the issue via email tech support: [support@sierrawireless.com](mailto:support@sierrawireless.com) for further deeper support.

Thanks,