On Tue, 23 Mar 2021 07:31:43 +0000, Harry Bloomfield, Esq. wrote:

Dave Plowman (News) has brought this to us :
Many these days use the car radio RDS signal.

Mine does - always correct ;-)

My landline phone system maintains the time and date, for logging any
calls and displays the time when 'parked'. It doesn't get used very much
and I notice it drifts quite a lot. That syncs itself with any incoming
or outgoing call.

Our phones sync with the NTP server!

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