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'[OT]: Anyone see oddball GPS time glitches last ni'
2002\01\01@200121 by Dale Botkin

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I saw two separate GPS time standard clocks (NTP servers) both swear it was
August 17, 2021 last night.  Different cities, same manufacturer and model
but otherwise nothing in common between the two.  Both were power cycled, one
recovered to the correct time immediately and one still had the wrong time
and date.  I would normally just curse the vendor and go on with life, but in
looking at some mail headers at home today I saw some August 16, 2021
timestamps from mail servers that could not have possibly had anything to do
with the two NTP servers I saw go nuts.

Has anyone else seen anything like this??  A Google search turns up nothing,
I'm about to hit the geek news sites as well.

Dale

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2002\01\01@202256 by John Brown

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No, but a couple of days ago my GPS thought I swapped hemispheres and back
in the middle of a bike ride! I arrived home to discover I'd ridden over
17,000 km that morning. Some ride!

John

At 01:00 AM 2/01/2002 +0000, you wrote:
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_______________________________________________________________________
John Brown
PhD (Clinical Psychology) candidate
                                      Email:  john.brownspamKILLspamanu.edu.au
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2002\01\01@215359 by John Ferrell

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I saw a news blurb somewhere that there was a concern that an EU satellite
might interfere with GPS signals. I failed to read it, and cannot remember
where I saw it.

May be LORAN is in our futures?

John Ferrell
6241 Phillippi Rd
Julian NC 27283
Phone: (336)685-9606
Dixie Competition Products
NSRCA 479 AMA 4190  W8CCW
"My Competition is Not My Enemy"



{Original Message removed}

2002\01\01@220029 by Jim

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  "May be LORAN is in our futures?"

Along with MLS I suppose (Microwave Landing
System - once proposed to replace ILS ...)

Jim



{Original Message removed}

2002\01\01@234534 by Alexandre Domingos F. Souza
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>I saw two separate GPS time standard clocks (NTP servers) both swear it was
>August 17, 2021 last night.  Different cities, same manufacturer and model
>but otherwise nothing in common between the two.  Both were power cycled, one
>recovered to the correct time immediately and one still had the wrong time
>and date.  I would normally just curse the vendor and go on with life, but in
>looking at some mail headers at home today I saw some August 16, 2021
>timestamps from mail servers that could not have possibly had anything to do
>with the two NTP servers I saw go nuts.

       It can be caused by 2 things

       1 - Loss of battery backup on the GPS. This is a **very** common failure. You haven't told if it also lost the almanac and settings, and the manufacturer/model of the unit. But this is a very common failure in the field.

       2 - Differences in ROM version of 2 GPS. One may have problems with y2k.


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Alexandre Souza
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2002\01\01@234739 by Brandon Fosdick

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Dale Botkin wrote:
>
> I saw two separate GPS time standard clocks (NTP servers) both swear it was
> August 17, 2021 last night.  Different cities, same manufacturer and model
> but otherwise nothing in common between the two.  Both were power cycled, one
> recovered to the correct time immediately and one still had the wrong time
> and date.  I would normally just curse the vendor and go on with life, but in
> looking at some mail headers at home today I saw some August 16, 2021
> timestamps from mail servers that could not have possibly had anything to do
> with the two NTP servers I saw go nuts.
>
> Has anyone else seen anything like this??  A Google search turns up nothing,
> I'm about to hit the geek news sites as well.

I haven't seen anything, but given that the US is still technically at war I
would imagine that regional selective availability is still in effect. It
wouldn't suprise me if there are some glitches in that process that produces
random errors for certain areas. Could be another year related bug in some
software somewhere too.

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2002\01\01@235405 by steve b

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I got some email that was dated for 2003.  Does that count?



In theory there is no difference between theory and practice.  In practice
there is a whole bunch of difference.  I pick practice.

Bad things like software bugs do not come one at a time but in bunches and
groups.  My apologies to Mr Shakespeare.

Steve B


{Original Message removed}

2002\01\02@001210 by Dale Botkin

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>         1 - Loss of battery backup on the GPS. This is a **very**
> common failure. You haven't told if it also lost the almanac and
> settings, and the manufacturer/model of the unit. But this is a very
> common failure in the field.

Nope.  These are line-powered GPS time standard servers, they use the GPS
sats to derive a (supposedly) highly accurate, stable time standard.
They're in two different data centers a couple of hundred miles apart,
each with power and environmental controls suitable for corporate use
(read "Lots of money spent on clean, stable power and cooling").

>         2 - Differences in ROM version of 2 GPS. One may have problems
> with y2k.

Nope again, both are up to current snuff on FLASH revisions and y2k
certified.

Also - each data center has two of these.  One in each data center went
haywire - the remaining two did not.  I find this to be extremely
interesting.

Dale

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2002\01\02@002425 by Alexandre Domingos F. Souza

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>Nope.  These are line-powered GPS time standard servers, they use the GPS
>sats to derive a (supposedly) highly accurate, stable time standard.
>They're in two different data centers a couple of hundred miles apart,
>each with power and environmental controls suitable for corporate use
>(read "Lots of money spent on clean, stable power and cooling").

       Nah, talking about internal backup battery...This was a common failure when I serviced marine GPS units (BTW, I'm looking for a CHEAP gps module, that outputs NMEA. Any suggestions? Can (and should!) be used and CHEAP, of course ;oD)

>Nope again, both are up to current snuff on FLASH revisions and y2k
>certified.

       Hmm

>Also - each data center has two of these.  One in each data center went
>haywire - the remaining two did not.  I find this to be extremely
>interesting.

       Haha, very interesting! :oD Maybe interference from one antenna in another? ;o)

       Ugh! Crazy problem! :oO


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'[OT]: Anyone see oddball GPS time glitches last ni'
2002\04\09@005325 by Rick C.
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January 1, 2002 a question was posted as to a possible glitch in GPS
units:
.
>I saw two separate GPS time standard clocks (NTP servers) both swear it
was
>August 17, 2021 last night.  Different cities, same manufacturer and
model
.
>Has anyone else seen anything like this??  A Google search turns up
nothing,
>I'm about to hit the geek news sites as well.
.
.
This document verifies it DID happen:

http://www.truetime.com/DOCSn/service_bulletins/2002rollover1.pdf

Rick

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