On 2020-08-24 12:51, Beth Connell wrote:
Hi,
I'm struggling to find any information on where the free NTP servers are
geographically based. In particular, I'm wondering where Facebook, Google,
Microsoft, etc are based within the UK. Just for curiousity, I'm wondering how
this affects any interference to my location.
Thanks
All NTP time is GMT (now named UTC, after HM government dropped the
ball). The only geographic factor is the "ping time" to the time
server, the servers that are the most distant (longest ping) are the
GPS and Galileo satellites, that are hundreds or thousands of km from
the receiver, and use their own (non-NTP) protocols to correct for the
delay.
Another problem is if the NTP server is one of those that deliberately
return slightly wrong time before and after each leap second to "smooth
out" the leap, some of the companies you mention reportedly do that.
Enjoy
Jakob
--
Jakob Bohm, CIO, Partner, WiseMo A/S. https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark. Direct +45 31 13 16 10
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WiseMo - Remote Service Management for PCs, Phones and Embedded
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