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Date:      Wed, 6 Jan 2021 00:30:47 +0200
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Stefan Esser <se@freebsd.org>, Warner Losh <imp@bsdimp.com>
Cc:        FreeBSD Hackers <freebsd-hackers@freebsd.org>, Hal Murray <hmurray@megapathdsl.net>
Subject:   Re: How does the time zone info get updated?
Message-ID:  <358b8939-5ec9-e340-8b06-f362cae38fa0@FreeBSD.org>
In-Reply-To: <02ebd386-a7fd-1816-72b6-3211f4bc69fb@freebsd.org>
References:  <20210105075109.A412C40605C@ip-64-139-1-69.sjc.megapath.net> <4e6721bc-e593-76b6-90f8-03d96486dc28@freebsd.org> <CANCZdfrsxY2-h4NmcnaC16Y_tdpQuxEjPCYgeMvdfqoz5AmzRw@mail.gmail.com> <47c37f75-e082-7a34-7eb6-3ee2a4ade395@freebsd.org> <CANCZdfqv670zxD2gb2q7HU%2B5D2wJeskuTDdmWPf5JyP_ZkLa6w@mail.gmail.com> <02ebd386-a7fd-1816-72b6-3211f4bc69fb@freebsd.org>

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On 2021-01-06 00:21, Stefan Esser wrote:
> Am 05.01.21 um 21:36 schrieb Warner Losh:
>> On Tue, Jan 5, 2021 at 12:51 PM Stefan Esser <se@freebsd.org
>> <mailto:se@freebsd.org>> wrote:
> [...]
>>     Yes, if only the leap-seconds are required, this helps get the time
>>     synchronized - but is quite different from timezone file updates.
>>
>>      > So no TZ update outside an os upgrade, but the leap seconds file
>>     updates
>>      > at the speed of NIST...
>>
>>     The OP did not ask for leap-second updates but for timezone files,
>>     if I understand his mail correctly.
>>
>> Yes. But I know him from another list I'm on and knew the back story.
>> How does FreeBSD know about leap seconds and what mechanism does it
>> use to keep up to date was the topic there.
> 
> Well, then you answered the question sent to the other list,
> which I have not seen and did not know about this context ...
> 
> But Ed Maste has meanwhile answered the question he asked on
> this list (as far as I understand it):
> 
> -> "freebsd-update" applies the timezone changes and EN notes
> are sent out to notify users of the availability of this update.
> 
> And release users should follow-up on EN notes anyway and thus
> should not miss the timezone updates.


Also, another option (at least for me) is to replace timezone files from
base with those from tzdata package.  Port / package updates are more
flexible / frequent.


-- 
Andriy Gapon



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