Sounds like a misstep in your O/S or program that controls these time changes. It doesn't know that the Feds changed the dates for the Spring and Fall changes. But not sure why that would happen becuase I am sure that there has been updates for that. Unless of course yours does not include DST changes.

I'm not sure what my pc's will do, I might even have to manually change them.

Of course another answer could be is that your computers know you to be a man ahead of his time and so adjusted accordingly.