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Paul's scenario can and I am sure does occur especially in
jurisdictions where the timezone changes are only known weeks in
advanced from the date they take effect. That's a political
problem not a software one. I am sure that the people to whom
this really matter (I am thinking the airline industries) probably
track this carefully enough and are able to make the needed
adjustment to their schedule. But you are right, in order for that
to happen correctly both the time and the timezone has to be noted
so that a correction can be applied properly.<br>
<br>
<br>
On 05/09/2013 3:48 PM, Lester Caine wrote:<br>
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<blockquote cite="mid:5228E020.4030905@lsces.co.uk" type="cite">Paul
Eggert wrote:
<br>
<blockquote type="cite">Even
<br>
if the tz database were perfect and complete for all past
<br>
time stamps, such a requirement would still go awry with
<br>
time stamps in the future: if someone now schedules a
<br>
meeting for October 1, 13:00, Casablanca time, and Morocco
<br>
changes its rules between now and then, software will mess
<br>
up after the rule change if it blithely relies on UTC
<br>
conversions that were computed before the change.
<br>
</blockquote>
<br>
Which is why the location of every event is important, the
housekeeping going forward has to take care of the change of time
of an event. If this is an international event in Casablanca then
all of the other delegates need to be informed of the time change
THAT is the reason for normalized times. If it is now an hour
earlier or later flight bookings may need changing! Information
about the CHANGE is critical for a number of reasons.
<br>
<br>
</blockquote>
<br>
<br>
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