Windows time 1 hour slow

sygnus21 said:

If what you say is true, then wouldn't all PCs have this issue? Not just two of millions? Looking around the net, I don't see mass posts on this. Nor do I see any in the eleven forums.

Also, where would the OP look find out if "the Summer Time definition in the UK been recently changed?"

Not all PCs would be affected. Only those that have not been updated would have this problem. Large numbers did indeed have this problem back in the US in the spring of 2007.

As for finding out whether the Summer Time definition in the UK been recently changed ... you wrote the Google search right there. Just look it up by pasting that phrase into Google. Or ask Siri. Or ask Alexa.

And ... I'll end with a funny story:
Half a century ago there was a popular phrase in America: "Look that up in your Funk & Wagnalls".
This was a double-entendre from the then-popular TV show Rowan and Martin's Laugh In.
Look that up in your Funk & Wagnalls! | The final season of Rowan & Martin's Laugh-In is now available in stores! Complete your collection today! | By Time Life

Funk & Wagnalls was a dictionary. Never as big as Webster's, but still a thing.

In the intervening years my wife and I have often wondered about some fact or another ... what was that actor's name? or when did that song first appear on the radio? Failing to come up with an answer, one of us would say "Look that up in your Funk & Wagnalls".

This happened numerous times over the decades ... so this year for my wife's birthday I purchased a copy of that dictionary. She now has her very own Funk & Wagnalls.

But ... it's been out of print for years, and it surely won't have the answer to the clock problem. So we're back to Google for that.