[time-nuts] NTP linked PC clock is slightly ahead of Lady Heather GPS time

Azelio Boriani azelio.boriani at gmail.com
Wed Oct 11 11:58:02 EDT 2017


For those who are in Europe there is the PTB (Physikalisch-Technische
Bundesanstalt, the German Federal institute of Physics and Technology)
service to check the PC's time:
<https://uhr.ptb.de/>

On Wed, Oct 11, 2017 at 5:25 PM, Mike Cook <michael.cook at sfr.fr> wrote:
> I have Win7-64 and my LH and system time are the same (with a very short delta of < 0.2s probably due to their respective window update time).
> I use the Meinberg disturb of NTP. My client’s offset from the paris observatory is less than a millisec.
>
> Maybe you should check your NTP status and see what offset you get from a known good source with ntpdate -b -d <name or IP>.
>
>
>
>
>> Le 11 oct. 2017 à 13:29, Chris Wilson <chris at chriswilson.tv> a écrit :
>>
>>
>>
>>  11/10/2017 12:24
>>
>> Probably   a   simple  answer,  but I am curious as to why my PC clock
>> which  is set by NTP on Windows 7 64 bit OS is ahead of Lady Heather's
>> time,  locked  to  a  Trimble  Thunderbolt  by  about  half  a  second
>> (guesstimate..)  I  caught  a screen shot of the discrepancy just now,
>> it's at http://www.gatesgarth.com/time.jpg
>>
>> I use NTP for low signal WSPR transmissions and a second out isn't the
>> end  of  the  world,  if  indeed  something  IS out. More academic than
>> problematic, thanks
>>
>> --
>>       Best Regards,
>>                   Chris Wilson.
>> mailto: chris at chriswilson.tv
>>
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>
> "The power of accurate observation is commonly called cynicism by those who have not got it. »
> George Bernard Shaw
>
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