Re: [111attendees] timing

Alexandre Petrescu <> Thu, 29 July 2021 12:39 UTC

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To: John Levine <>,
References: <20210728211403.C21B7254289F@ary.qy>
From: Alexandre Petrescu <>
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Date: Thu, 29 Jul 2021 14:39:43 +0200
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Subject: Re: [111attendees] timing
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Le 28/07/2021 à 23:14, John Levine a écrit :
> It appears that Alexandre Petrescu <> 
> said:
>> Le 28/07/2021 à 15:41, Carsten Bormann a écrit :
>>> On 28. Jul 2021, at 15:31, Vittorio Bertola 
>>> <> wrote:
>>>> unless strong community consensus on a different practice 
>>>> appears.
>>> s/unless/until/
>>> Let’s get this going.
>> There is a difference in opposing noon start times and opposing UTC
>> references.  I oppose the latter.
>> Using UTC is a big source of errors: ...
> I have to completely disagree.
> In my experience, people's idea of what timezone they are in is 
> frequently wrong, even quite well educated people. Last year I had to
> explain to a Harvard Law student when the US time changed that EST 
> and EDT are different, and the only reliable way to tell students 
> from Asia what time an online class starts is to give them the UTC 
> time.

It easy for one person to tell many students a single time (UTC), but it
is difficult for each student to convert that to their particular case.

It is difficult for one person to make many conversions each dedicated
to a student; but that will make it easy for each student :-)

When that person wants to make many conversions then one person would
like to make direct conversions, without going to UTC, to make the task
just a little simpler.

It is difficult for the person to imagine all the students, and their
regions, that might come to the lecture, and where they might come from.
  The solution to that would be to reduce the number of time zones, or to
simplify them.

If we had simpler time zones then we'd see a shorter unfolding menu of
times in the IETF Agenda.


> Here in the IETF we are spread across at least ten time zones that 
> have at least three different schedules for summer/winter time,
> along with several more that keep the same time all year.  The only 
> reliable way to tell us all when something happens is to tell us in 
> UTC.
> R's, John