<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">Airlines aren't without their flaws. I
did see a flight that was magically 1h shorter than all the
others. Reason: DST to ST switchover was occurring during the
flight and the reservation system didn't take that into account in
their computation of the time of flight. That said, you would
think that scheduling is an area where airlines pay particular
attention.<br>
<br>
So it doesn't really matter if you store the meeting time in UTC,
local time + TZ or Julian Dates, these are all monotonic. The
question is if you have the all the needed information to convert
from one form to the next correctly so that this UTC flight time
correspond to the correct arrival time in local time. <br>
<br>
<br>
<br>
On 06/09/2013 6:03 PM, Clive D.W. Feather wrote:<br>
</div>
<blockquote cite="mid:20130906220336.GA83753@davros.org" type="cite">
<pre wrap=""><a class="moz-txt-link-abbreviated" href="mailto:random832@fastmail.us">random832@fastmail.us</a> said:
</pre>
<blockquote type="cite">
<pre wrap="">Yeah, but if you've got a flight that takes a set amount of time, and
one of the endpoints switches zones and the other doesn't, you'd have to
reschedule one of them anyway. Airlines are the one place I think it
_would_ make sense to schedule everything in UTC. The only situation it
wouldn't is if both endpoints make the same change (as when the whole US
changed its daylight saving rules).
Do we have any airline people here who can comment?
</pre>
</blockquote>
<pre wrap="">
Back when you could visit the flight deck on trans-Atlantic flights, I
often did so. Sometimes I'd look at the flight planning printout, which
gave scheduled times at various checkpoints en route (from memory these are
about every 5 degrees of longitude). All times were in Zulu.
</pre>
</blockquote>
<br>
<br>
<div class="moz-signature">-- <br>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<title></title>
<!--
03/26/2007
Email Signature File created by Houston Berry
To be used by any Oracle employee with:
Netscape 7+, Microsoft Outlook, or Mac Mail 4.7+
font-size used to set size in Mac Mail
//-->
<br>
<br>
<img src="cid:part1.05020009.00070800@oracle.com" alt="Oracle
Email Signature Logo" height="26" width="114"><br>
<font face="Verdana, Arial, Helvetica, sans-serif" size="2"
color="#666666"> Patrice Scattolin | Principal Member Technical
Staff | 514.905.8744<br>
<font color="#FF0000">Oracle</font> WebCenter Mobile
applications<br>
600 Blvd de Maisonneuve West<br>
Suite 1900<br>
Montreal, Quebec
</font>
</div>
</body>
</html>