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

NEAR ENOUGH IS GOOD ENOUGHÂ*Â*Â*Â* 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.