How do I determine correct time and recalibrate when my devices show a difference?

Factual Questions
41

https://www.google.com/search?sca_esv=b9a0ab85e5fabe6e&rlz=1C1VDKB_enUS958US958&sxsrf=ADLYWIKHYmrhmzckdnq5r0yMnVDVAffWEA:1724792450806&q=why+do+my+devices+show+different+times&spell=1&sa=X&ved=2ahUKEwjau93KiJaIAxWhlYkEHVAxK-4QBSgAegQIGRAB&biw=1280&bih=559&dpr=1.5

42

Your phone will be correct, but your PC may not be. Go into the Date&Time control panel and make sure Set Time Automatically is ON. Then hit the Sync Now button.

43

My Casio wristwatch does that. It’s also also solar-powered so it never need batteries. I use it for clocks that need to be set manually.

(I also still have a Sony ICF-2010 shortwave radio. I used to listen programs on the BBC World Service.)