Confused about time

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Archived from groups: alt.games.microsoft.flight-sim (More info?)

No....I don't mean it's time I got confused! 🙂

Zulu

Why is it so difficult to understand? (for me anyway)

Before I make the final step to flying online I want to make sure I
understand this. So I've been Googling it and I ended up on
www.howstuffworks.com

UTC, GMT and Zulu are the same? If so, why the different names?

Now...according to the same site...when it's 19:41 here in Amsterdam it's
17:41 Zulu?

In other words....when I want to file a flightplan with a VATSIM controller
and it's 15:30 here, I have to file a departure time of 13:30? (1330Z)
Is that how that works?

In their flightplan example a departure time of 0140Z was entered.
That's 01:40 AM, isn't it? (which would then be 03:40 AM here?)

HELP!! I'm going nutso!!

--

Marcel
(You've got clearance, Clarence. Roger, Roger. What's our vector, Victor?)
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

AIUI, Zulu is GMT.
Normally, you in Amsterdam are 1 hour ahead of us here in the UK. We've just
changed our clocks, bringing us 'in line' (I think) with you - but GMT
remains the same - hence the 2 hour difference.
This is how I see it, happy if anyone tells me otherwise though 🙂

Dave
potterAIR 737-800
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

"Marcel Kuijper" <zoepetier_nothing_here@hotmail.com> schrieb im Newsbeitrag
news:1p7plwegi7nio$.1ugx982e9xh11$.dlg@40tude.net...
>
> No....I don't mean it's time I got confused! 🙂
>
> Zulu
>
> Why is it so difficult to understand? (for me anyway)
>
> Before I make the final step to flying online I want to make sure I
> understand this. So I've been Googling it and I ended up on
> www.howstuffworks.com
>
> UTC, GMT and Zulu are the same? If so, why the different names?
>
> Now...according to the same site...when it's 19:41 here in Amsterdam it's
> 17:41 Zulu?
>
> In other words....when I want to file a flightplan with a VATSIM
> controller
> and it's 15:30 here, I have to file a departure time of 13:30? (1330Z)
> Is that how that works?
>
> In their flightplan example a departure time of 0140Z was entered.
> That's 01:40 AM, isn't it? (which would then be 03:40 AM here?)
>
> HELP!! I'm going nutso!!
>
> --
>
> Marcel
> (You've got clearance, Clarence. Roger, Roger. What's our vector, Victor?)

Yep Marcel, it's all the same.
GMT = Greenwich Mean Time
UTC = Universal Time Coordinated
Zulu = dunno where this originates from.
The official term nowadays is UTC. All the others still in use
anyway -people are not veeereey flexible these days.. ;-)
Local time varies with time zones and daylight saving time shifts. UTC
always remains fixed. All pertinent times in aviation are based in UTC thus
of course flight plans, T/O and landing times etc. are always issued in UTC.
And yes, UTC times are always given in four digits ranging from 0000 th
2399, no AM or PM.
In Switzerland we have now UTC +2 (I think the same as in the Netherlands)
and I guess England, Scotland etc. have now UTC +1.
See, it's not that confusing..... ;-)))
--
Oskar
(retired captain)
Remember, in the great scheme of things, we're all small potatoes...
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

On Mon, 28 Mar 2005 20:34:49 GMT, Dave Potter wrote:

> AIUI, Zulu is GMT.
> Normally, you in Amsterdam are 1 hour ahead of us here in the UK. We've just
> changed our clocks, bringing us 'in line' (I think) with you -

<buzzer sounds>
Nope...we both changed our clocks.
Sorry Dave, the UK will always follow the rest of Europe. ;-)


> but GMT remains the same - hence the 2 hour difference.
> This is how I see it, happy if anyone tells me otherwise though 🙂

Oskar seems to agree with you, which means you're right.
Thanks.

--

Marcel
(Gear up, AP engaged...hey...what's that emergency light?)
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

On Tue, 29 Mar 2005 04:33:07 +0200, Oskar Wagner wrote:

> Yep Marcel, it's all the same.
> GMT = Greenwich Mean Time
> UTC = Universal Time Coordinated
> Zulu = dunno where this originates from.
> The official term nowadays is UTC. All the others still in use
> anyway -people are not veeereey flexible these days.. ;-)
> Local time varies with time zones and daylight saving time shifts. UTC
> always remains fixed. All pertinent times in aviation are based in UTC thus
> of course flight plans, T/O and landing times etc. are always issued in UTC.
> And yes, UTC times are always given in four digits ranging from 0000 th
> 2399, no AM or PM.
> In Switzerland we have now UTC +2 (I think the same as in the Netherlands)
> and I guess England, Scotland etc. have now UTC +1.
> See, it's not that confusing..... ;-)))

Apparently "Zulu" is military, from what I've read on websites.
And yes, time here in The Netherlands is also UTC+2.

Okay...so UTC is sort of a static global clock from which we can all feed.
At least METARs now make more sense to me. 🙂
And I now understand why fly-ins are always in Zulu-time.
I'm blessed that the world-clock on teletext also comes with GMT/UTC.
From now on....no more problems with time.
Another problem solved! One just keeps on learning here.

Thank you, Oskar.

--

Marcel
(That's no moon...it's a space station!)
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

-----BEGIN PGP SIGNED MESSAGE-----
Hash: RIPEMD160

Hi Marcel Kuijper,

On Tue, 29 Mar 2005 20:53:29 +0200, you wrote:

> Apparently "Zulu" is military, from what I've read on websites.

The following is from this page:

http://www.chinfo.navy.mil/navpalib/questions/zulutime.html

=====================================================================
The Navy, as well as civil aviation, uses the letter "Z" (phonetically
"Zulu") to refer to the time at the prime meridian. The U.S. time
zones are Eastern ["R", "Romeo]; Central ["S", "Sierra"]; Mountain
["T", "Tango"]; Pacific ["U", "Uniform"]; Alaska ["V", "Victor"], and
Hawaii ["W", "Whiskey"].
=====================================================================

- --
Melissa

PGP Public Keys: http://www.willkayakforfood.tk

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Archived from groups: alt.games.microsoft.flight-sim (More info?)

On Wed, 30 Mar 2005 00:22:19 -0800, Lawn Dart wrote:

> The following is from this page:
>
> http://www.chinfo.navy.mil/navpalib/questions/zulutime.html

That's an interesting read. Thanks, LD.


> =====================================================================
> The Navy, as well as civil aviation, uses the letter "Z" (phonetically
> "Zulu") to refer to the time at the prime meridian. The U.S. time
> zones are Eastern ["R", "Romeo]; Central ["S", "Sierra"]; Mountain
> ["T", "Tango"]; Pacific ["U", "Uniform"]; Alaska ["V", "Victor"], and
> Hawaii ["W", "Whiskey"].
> =====================================================================

Well okay. On www.howstuffworks.com they said that Zulu-time was Military,
so naturally I thought it originated from military use. You know, as in a
way to keep all military operations on a tight schedule.

Doesn't really matter...at least now I know how it works and that's the
important part.

--

Marcel
(Mmmmmm.....beer and doughnuts. - Homer Simpson)
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

Good morning Marcel;

Sir Sandford Fleming proposed time zones for the global business
community, which would then be aware of the time in other parts of the
world. He proposed letters be used and used Z as a reference.

The town of Greenwich falls on Zero longitude and thus Greenwich Mean
Time (GMT) was used to designate the standard. The SI designation is UTC
(Universal Coordinated Time in English) and both are used.

For purposes of abbreviation, certain organizations use letters to
designate local time if necessary. Halifax uses Papa for standard time and
Quebec for daylight saving.

I recall while in the navy calling home from places like Denmark &
Germany, Greece, and having to keep in mind that my wife was in a time at
least four hours behind. And vice versa.

For it to make sense, you need two clocks, one for the standard and one
for local. The former remains constant while the latter allows for daylight
savings time.

Clear as mud?

Cheers,
John


"Marcel Kuijper" <zoepetier_nothing_here@hotmail.com> wrote in message
news:12syy4qxpqqe6.1tlqpllkdlz0o.dlg@40tude.net...
> On Wed, 30 Mar 2005 00:22:19 -0800, Lawn Dart wrote:
>
>> The following is from this page:
>>
>> http://www.chinfo.navy.mil/navpalib/questions/zulutime.html
>
> That's an interesting read. Thanks, LD.
>
>
>> =====================================================================
>> The Navy, as well as civil aviation, uses the letter "Z" (phonetically
>> "Zulu") to refer to the time at the prime meridian. The U.S. time
>> zones are Eastern ["R", "Romeo]; Central ["S", "Sierra"]; Mountain
>> ["T", "Tango"]; Pacific ["U", "Uniform"]; Alaska ["V", "Victor"], and
>> Hawaii ["W", "Whiskey"].
>> =====================================================================
>
> Well okay. On www.howstuffworks.com they said that Zulu-time was Military,
> so naturally I thought it originated from military use. You know, as in a
> way to keep all military operations on a tight schedule.
>
> Doesn't really matter...at least now I know how it works and that's the
> important part.
>
> --
>
> Marcel
> (Mmmmmm.....beer and doughnuts. - Homer Simpson)
 
Archived from groups: alt.games.microsoft.flight-sim (More info?)

On Thu, 31 Mar 2005 11:57:26 GMT, John Fraser wrote:

<snip>
> Clear as mud?

Like a pool full. 🙂
Thanks for the explanation, John.

--

Marcel
(There's no such thing as a natural-born pilot. - Chuck Yeager)
 
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