# No DST in Brazil in 2019

**URL:** <https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477>\
**Category:** Uncategorized\
**Created:** [October 23, 2019, 5:29pm UTC](https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477 "2019-10-23T17:29:16Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![f.mello](https://avatars.discourse-cdn.com/v4/letter/f/a9a28c/32.png) [@f.mello](https://community.ntppool.org/u/f.mello)\
**Post date:** [October 23, 2019, 5:29pm UTC](https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477/1 "2019-10-23T17:29:16Z")

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Hi guys,

In our company we use Grandstream phones, and they use NTP server “[pool.ntp.org](http://pool.ntp.org)”.  
But this year in Brazil, we didn’t use DST.  
The phones are with wrong time.

How do I solve this?  
Locally I can solve it changing the NTP phone by phone, but we have a lot of them.

Thank you,  
Fabio

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**Author:** ![elljay](https://avatars.discourse-cdn.com/v4/letter/e/5fc32e/32.png) [@elljay](https://community.ntppool.org/u/elljay)\
**Post date:** [October 23, 2019, 5:49pm UTC](https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477/2 "2019-10-23T17:49:52Z")

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Hi Fabio, NTP always gives time in UTC. The phones themselves need a software/firmware update from Grandstream to set the offset from UTC.

Maybe there’s an option to set the offset manually if there’s no update available?

Thanks

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**Author:** ![elljay](https://avatars.discourse-cdn.com/v4/letter/e/5fc32e/32.png) [@elljay](https://community.ntppool.org/u/elljay)\
**Post date:** [October 23, 2019, 5:56pm UTC](https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477/3 "2019-10-23T17:56:47Z")

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Hi again, there’s some info from Grandstream here which might help depending which model of phone you’ve got:

[http://www.grandstream.com/support/faq/common-questions/informational](http://www.grandstream.com/support/faq/common-questions/informational)  
[http://www.grandstream.com/support/faq/product-related-questions/gxp2000-enterprise-phone](http://www.grandstream.com/support/faq/product-related-questions/gxp2000-enterprise-phone)

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**Author:** ![f.mello](https://avatars.discourse-cdn.com/v4/letter/f/a9a28c/32.png) [@f.mello](https://community.ntppool.org/u/f.mello)\
**Post date:** [October 23, 2019, 6:59pm UTC](https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477/4 "2019-10-23T18:59:26Z")

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Hi Elljay,

I found a syntax and applied a Self-Defined Time Zone [BRT+4BRST,M10.3.0,M2.3.0].  
But now I need to updated it phone by phone.

It’s going to take some time, but let’s go ahead.

Thank you Elljay!  
Fabio

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**Author:** ![elljay](https://avatars.discourse-cdn.com/v4/letter/e/5fc32e/32.png) [@elljay](https://community.ntppool.org/u/elljay)\
**Post date:** [October 23, 2019, 7:26pm UTC](https://community.ntppool.org/t/no-dst-in-brazil-in-2019/1477/5 "2019-10-23T19:26:31Z")

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You’re welcome, Fabio 🙂

I found this - it looks like some Grandstream phones support “DHCP Option 2 - Time Offset”, which might allow you to set them all centrally (if it doesn’t mess up other devices using DHCP!):

> **[DHCP\_Options\_Guide\_Linux\_0.pdf](https://www.grandstream.com/sites/default/files/Resources/DHCP_Options_Guide_Linux_0.pdf)**
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> 1231.35 KB