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Guest
Posted: Sat Feb 03, 2007 12:26 pm
As you know, in 2007 the daylight time begins on March 11 rather than
April 2 and ends on November 4 rather than October 29. Just to keep
us confused, the new law says that in 2008, the dates will change
again. Go to http://aa.usno.navy.mil/faq/docs/daylight_time.html to
see a statement about this from the folks at the US Naval Observatory.

My question is this; does anyone know how our GPSRs, specifically
Garmin, will will handle this change. Since most receivers have an
Auto setting, won't this require a firmware update?
Roger Mills
Posted: Sat Feb 03, 2007 3:41 pm
Guest
In an earlier contribution to this discussion,
wayneskid@alaska.net <wayneskid@alaska.net> wrote:

Quote:
As you know, in 2007 the daylight time begins on March 11 rather than
April 2 and ends on November 4 rather than October 29. Just to keep
us confused, the new law says that in 2008, the dates will change
again. Go to http://aa.usno.navy.mil/faq/docs/daylight_time.html to
see a statement about this from the folks at the US Naval Observatory.

My question is this; does anyone know how our GPSRs, specifically
Garmin, will will handle this change. Since most receivers have an
Auto setting, won't this require a firmware update?

Isn't there a manual time setting? If not, it will just display local time
wrongly for a week or two - it won't stop it from reporting the correct
location. AIUI the GPS system is based on UTC (or GMT to us Brits) - which
doesn't change with the seasons. Local time is displayed using an offset (if
necessary) from UTC - and it's only the offset which needs to change with
summertime (daylight saving time).
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!
Josh Hillman
Posted: Sat Feb 03, 2007 10:45 pm
Guest
Roger already took care of answering the overall question here, but
for clarification, the date change in 2008 is completely normal and is
not a deviation from the updated law that starts in 2007.

In recent years, in most of the US, daylight saving time (DST) started
on the first Sunday of April and ended on the last Sunday of October.
Starting in 2007, DST starts on the second Sunday of March and ends on
the first Sunday of November. So the dates will continue to be a
little different each year, just as they had before the law change
takes effect.

2005: April 5 - October 30
2006: April 2 - October 29
2007: March 11 - November 4
2008: March 9 - November 2
2009: March 8 - November 1

Josh

On 3 Feb 2007 08:26:32 -0800, wayneskid@alaska.net wrote:

Quote:
As you know, in 2007 the daylight time begins on March 11 rather than
April 2 and ends on November 4 rather than October 29. Just to keep
us confused, the new law says that in 2008, the dates will change
again. Go to http://aa.usno.navy.mil/faq/docs/daylight_time.html to
see a statement about this from the folks at the US Naval Observatory.

My question is this; does anyone know how our GPSRs, specifically
Garmin, will will handle this change. Since most receivers have an
Auto setting, won't this require a firmware update?
J. J. Lodder
Posted: Sun Feb 04, 2007 5:41 am
Guest
Josh Hillman <hillman@talstar.com> wrote:

Quote:
Roger already took care of answering the overall question here, but
for clarification, the date change in 2008 is completely normal and is
not a deviation from the updated law that starts in 2007.

In recent years, in most of the US, daylight saving time (DST) started
on the first Sunday of April and ended on the last Sunday of October.
Starting in 2007, DST starts on the second Sunday of March and ends on
the first Sunday of November. So the dates will continue to be a
little different each year, just as they had before the law change
takes effect.

2005: April 5 - October 30
2006: April 2 - October 29
2007: March 11 - November 4
2008: March 9 - November 2
2009: March 8 - November 1

Josh

And it is of course unthinkable
that the USA and Western Europe
could have the same rule,

Jan
Guest
Posted: Sun Feb 04, 2007 7:26 am
Roger - you are correct except that the GPS system is based on GPS
time which, because it ignores leap seconds, it currently 14 seconds
ahead of UTC. The correction to compensate for this is done in the
receiver.
Josh - thanks for pointing out that years past 2007 follow the same
(new) pattern.

Wayne
GSV Three Minds in a Can
Posted: Sun Feb 04, 2007 8:05 am
Guest
Bitstring <1ht079v.1fyfb8z1h9vbejN@de-ster.xs4all.nl>, from the
wonderful person J. J. Lodder <nospam@de-ster.demon.nl> said
<snip>
Quote:
And it is of course unthinkable
that the USA and Western Europe
could have the same rule,

Hey, it was years before the UK and the rest of Europe even had he same
rule. A flight from NY to Paris via London was a major planning exercise
for a couple of weeks, back then...

--
GSV Three Minds in a Can
7,627 Km walked. 1,352Km PROWs surveyed. 24.6% complete.
Ted Edwards
Posted: Sun Feb 04, 2007 2:49 pm
Guest
Josh Hillman wrote:
Quote:
Starting in 2007, DST starts on the second Sunday of March and ends on
the first Sunday of November. So the dates will continue to be a
little different each year, just as they had before the law change
takes effect.

2005: April 5 - October 30

That should be
1 Fdate D_S_T 2005
Sun, 2005 Apr 3 at 02:00:00
Sun, 2005 Oct 30 at 02:00:00
J. J. Lodder
Posted: Sun Feb 04, 2007 6:34 pm
Guest
GSV Three Minds in a Can <GSV@quik.clara.co.uk> wrote:

Quote:
Bitstring <1ht079v.1fyfb8z1h9vbejN@de-ster.xs4all.nl>, from the
wonderful person J. J. Lodder <nospam@de-ster.demon.nl> said
snip
And it is of course unthinkable
that the USA and Western Europe
could have the same rule,

Hey, it was years before the UK and the rest of Europe even had he same
rule. A flight from NY to Paris via London was a major planning exercise
for a couple of weeks, back then...

Yes, but the EU had the good sense to synchronize.
It is downright stupid that the USA doesn't join,
now that they have finally gotten round to changing their rule.

An extra week of DST can't be that important,

Jan
Gil Baron
Posted: Sun Feb 04, 2007 10:19 pm
Guest
J. J. Lodder wrote:
Quote:

An extra week of DST can't be that important,

Just another stupid government blunder,
--
Gil W0MN Yanoff +, the PDA reader
Creed en las obras y no en las palabras
J. J. Lodder
Posted: Mon Feb 05, 2007 5:33 am
Guest
Gil Baron <w0mn00@gmail.com> wrote:

Quote:
J. J. Lodder wrote:

An extra week of DST can't be that important,

Just another stupid government blunder,

And there was me thinking that America is democracy,
at least, that's what Americans always tell me.

It's the reason they still have those stupid units,
I've been told over and over again,

Jan
Roger Mills
Posted: Mon Feb 05, 2007 6:09 am
Guest
In an earlier contribution to this discussion,
J. J. Lodder <nospam@de-ster.demon.nl> wrote:

Quote:
Gil Baron <w0mn00@gmail.com> wrote:

J. J. Lodder wrote:

An extra week of DST can't be that important,

Just another stupid government blunder,

And there was me thinking that America is democracy,
at least, that's what Americans always tell me.

It's the reason they still have those stupid units,
I've been told over and over again,

Jan

Which stupid units would that be? I'm all for feet and inches, and miles.
Pity they can't get the definition of a gallon right, though. <g>
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!
Roger Mills
Posted: Mon Feb 05, 2007 6:12 am
Guest
In an earlier contribution to this discussion,
J. J. Lodder <nospam@de-ster.demon.nl> wrote:

Quote:
GSV Three Minds in a Can <GSV@quik.clara.co.uk> wrote:

Bitstring <1ht079v.1fyfb8z1h9vbejN@de-ster.xs4all.nl>, from the
wonderful person J. J. Lodder <nospam@de-ster.demon.nl> said
snip
And it is of course unthinkable
that the USA and Western Europe
could have the same rule,

Hey, it was years before the UK and the rest of Europe even had he
same rule. A flight from NY to Paris via London was a major planning
exercise for a couple of weeks, back then...

Yes, but the EU had the good sense to synchronize.
It is downright stupid that the USA doesn't join,
now that they have finally gotten round to changing their rule.

An extra week of DST can't be that important,

Jan

Interestingly, Australia (NSW at any rate) is in synch with Europe, even
though they move in the opposite direction. This means that they have only 5
months of summertime and 7 of wintertime - rather than the other way round.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!
J. J. Lodder
Posted: Mon Feb 05, 2007 5:33 pm
Guest
Roger Mills <watt.tyler@googlemail.com> wrote:

Quote:
In an earlier contribution to this discussion,
J. J. Lodder <nospam@de-ster.demon.nl> wrote:

Gil Baron <w0mn00@gmail.com> wrote:

J. J. Lodder wrote:

An extra week of DST can't be that important,

Just another stupid government blunder,

And there was me thinking that America is democracy,
at least, that's what Americans always tell me.

It's the reason they still have those stupid units,
I've been told over and over again,

Jan

Which stupid units would that be?

You've got three guesses.

Quote:
I'm all for feet and inches, and miles.
Pity they can't get the definition of a gallon right, though. <g

Wasn't that something to do with the size of a king's hat?

Jan
Andreas van Hooijdonk
Posted: Mon Feb 05, 2007 5:48 pm
Guest
"Roger Mills" <watt.tyler@googlemail.com> wrote in message
news:52oe7oF1perb2U1@mid.individual.net...
Quote:

Interestingly, Australia (NSW at any rate) is in synch with Europe, even
though they move in the opposite direction. This means that they have only
5
months of summertime and 7 of wintertime - rather than the other way
round.
--
Cheers,
Roger

In Europe DST starts at 2.00h on the last Sunday of March, when the time is
advanced one hour. It ends at 3.00h on the last Sunday in October when the
time is set back one hour. In South Australia DST starts at 2.00h on the
last Sunday of October and ends at 3.00h on the last Sunday of March. They
sync the dates, but do an opposite direction on those days.

Kind regards

--
Andreas van Hooijdonk
http://www.gps-practice-and-fun.com
Geoff
Posted: Mon Feb 05, 2007 8:44 pm
Guest
GSV Three Minds in a Can wrote:
Quote:
Bitstring <1ht079v.1fyfb8z1h9vbejN@de-ster.xs4all.nl>, from the
wonderful person J. J. Lodder <nospam@de-ster.demon.nl> said
snip

And it is of course unthinkable
that the USA and Western Europe
could have the same rule,


Hey, it was years before the UK and the rest of Europe even had he same
rule. A flight from NY to Paris via London was a major planning exercise
for a couple of weeks, back then...

Whenever this old DST thing comes up, I always want to ask (and sometimes

do ask, like now) why, if you want to go to work an hour earlier in summer,
and return home an hour earlier, DON'T YOU JUST DO THAT??? And leave
the clocks alone!
I haven't altered my wristwatch for DST changes for over 40 years (in
both Europe and N. America)...I do notice that a lot of folks seem to be
an hour wrong in summertime, though. I ignore 'em...<grin>

Geoff.
 
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