On Tue, 23 Mar 2021 15:26:00 +0000, Andrew
wrote:

On 23/03/2021 09:03, Jim GM4DHJ ... wrote:
On 22/03/2021 18:58, Scott wrote:
How does my car clock work?* It cannot be quartz or radio controlled
as it runs slightly fast.* It cannot be synchronous because the supply
is DC.* Is there any form of adjustment to get it to run to time?

NEAR ENOUGH IS GOOD ENOUGH**** YOU HAVE TO RESET IT TWICE A YEAR ANYWAY

Having slightly fast is usually not an issue if you need to get
somewhere at a particular time.

My father told the tale that my granny always set the clock 10 minutes
fast for this reason. Everyone knew it was 10 minutes fast and made
the mental adjustment so the exercise was futile.