Daylight Saving Time ends on Nov. 1 each year. Your smart devices should have moved back an hour, but if your Windows 10 PC did not, then the time server it's set to may be down.
To fix it, open Control Panel and click on Date and Time, then the Internet Time tab. Click on Change Settings. Most likely it's set to time.windows.com, which at midday on Nov. 1, 2020 was not working. Switch to another choice, such as time.nist.gov, and that should fix the problem.

