Text 28104, 119 rader
Skriven 2012-04-19 03:01:14 av Roy Witt (1:387/22)
  Kommentar till text 28074 av Michiel van der Vlist (2:280/5555)
Ärende: TZUTC Kludge
====================
19 Apr 12 00:46, Michiel van der Vlist wrote to Roy Witt:

 MvdV>>> It would help if your messages displayed a "TZUTZ 0000" kludge.
 RW>> Good advice. See kludges in this message...
 MvdV> Check.
 MvdV>>> I do not know how setting your own machine to UTC helps to
 MvdV>>> determine in what time zone the others are. True, it is not at
 MvdV>>> all easy to determine the time zone from the location, but how
 MvdV>>> does this help. It would help if everyone dd it, but that
 MvdV>>> obviously is not happening.

 RW>> One would also have to know the date that your local clock is set
 RW>> for DST or Stand Time or as in your case, 0100 before UTC in your
 RW>> time zone.

 MvdV> Indeed, the transition times from DST to ST and back are not
 MvdV> uniform. Here in Europe (Except the UK) the spring transition is on
 MvdV> the last Sunday in March and the fall transition on the last Sunday
 MvdV> in October.

And here DST begins on the 2nd Sunday in March and ends on the first
Sunday in November.

 RW>> Using my DX World Map posted on the wall over this PC, just knowing
 RW>> your country is close enough.

 MvdV> aparently not...

The time zones on the map don't follow local time zone lines, they follow
degrees before and after UTC 0. i.e. the center of the -6 hour coordinates
is 90 degrees west of UTC 0, but -6 hours UTC begins closer to New Orleans
than San Antonio, which is closer to 90 degrees.

Which doesn't reflect the true CST which begins on the Eastern border with
Louisiana and ends somewhere in west Texas, putting El Paso, Texas in the
Mountain Standard Time zone.

I would  suspect the same is true of local time zones in Europe, to
accommodate a convenience for heavily populated areas.

 RW>> The time chart at the bottom of that map shows western Europe
 RW>> standard time is either 0 or 1 hour before 0.

 MvdV> Eh.. no. My country is not on Western European Time, it is on
 MvdV> Middle European time. +0100 in winter and +0200 in summer...

Right. 0 UTC is in Greenwich, England and 0100 begins somewhere around 7.5
degrees east of there. i.e. South Africa is split up the middle by the
0100-0200 line at 22.5 degrees, but I'll bet the whole country is in one
time zone.

 RW>> Interesting is how Ireland is split up the middle, either 0 or
 RW>> -1...how they deal with that I don't know.

 MvdV> Your chart is wrong. All of Ireland is on the same time. Same time
 MvdV> as the UK.

Which is a local time zone difference for convenience of the population.

 MvdV>>> To convert your own local time to UTC and vice versa... yes
 MvdV>>> that's easy because you know your own time zone. But how does
 MvdV>>> it help you to know what e.g. my time zone is?

 RW>> I know that your country is in the 0100 time zone. See above.

 MvdV> But how do you know?

The map includes a close-up view of western Europe. Time zones are shown
by a dotted line, which is self explantory in the "Legends" column.

 ----------- Time Zone Boundry

 MvdV> Where do you get the information about the DST transition times?

That's a guessing game, but usually close to the same times as the
transition takes place here, give or take a week or so...and just like
Arizona (MST) there are probably places around the world that don't have
DST.

 MvdV>>> When my computers were stand alone running DOS or some olde OS,
 MvdV>>> and were only used by myself and and only made contact with other
 MvdV>>> system by modem, it was no problem, it was even convenient. But
 MvdV>>> now that it is running windows and internet access is part of the
 MvdV>>> OS, setting the machine's time to UTC has unwanted side effects.
 MvdV>>> The time stamp in my e-mails is confusing for most recipients. My
 MvdV>>> web site is confusing for the locals if it does not run local
 MvdV>>> time. Etc, etc...

 RW>> I see. None of my email recipients have complained about the time
 RW>> stamp in my emails. They probably don't pay any attention to that
 RW>> info anyway.

 MvdV> Probably. There is also the matter of on-line bank transfers. I
 MvdV> just made a payment 5 minutes before the deadline. Had I not used
 MvdV> local time, I would have been late...

I use paper...which is my choice. It has served my purposes, as I have two
bills that I pay that go to two seperate Post Office Boxes in the same ZIP
code of Atlanta, Georgia. One of them (AT&T) sends me an email telling me
the time and date they received my payment and when that payment was
posted to my account.

When the other one calls me and says that they haven't received payment
yet (usually after the due date), I tell them that they're full of s..t
because the payments were sent from here and received there at such and
such a date and time. They've tried to extort a late payment fee ($20+)
from me in the past and all of a sudden they've found my payment lost in
their own paper shuffle. I keep those email updates in a Yahoo email
folder.

                R\%/itt


  ... Only those who will risk going too far can possibly
  ... find out how far one can go ~ TS Eliot


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