Richard B. Gilbert wrote:

>> My config file is below. I'm not sure if I would be better picking
>> time servers close to me.
>
> I am, and you would be! See below.
>>
>>
> <snip>
>> server navobs1.oar.net
>> server utcnist.colorado.edu
>> server gnomon.cc.columbia.edu
>> server ntp.colby.edu
>> server clepsydra.dec.com
>> server chronos.cru.fr
>> server ptbtime1.ptb.de
>> server ntp.metas.ch
> <snip>
>
> You seem to have achieved extreme geographical diversity; IOW you are
> using servers located all over the planet!
>
> Servers that are closest to you, in net space; e.g. those with the
> lowest value of delay are usually the best choices. Delay is important
> because the maximum uncertainty in transmitting time from client to
> server is less than or equal to one half of the round trip delay.

I'll change the servers.

I do actually have a Rubidium source, which gives a 1 pps output and can
be locked to GPS. But I cant be bothered to do all that to just have the
time. I dont need sub-second accuracy, but I obviously want to avoid big
jumps like this. I'll pick some closer servers.

I am in the UK.