I was also checked about the timezone by support and it was fine. As others have said, the light turns on at the correct time, which wouldn’t happen if the timezone was incorrect. I, too, have noticed that sometimes, after manually turning on the light because it shut off despite the Light Schedule, that the light doesn’t always turn off as per Light Schedule and must then be manually turned off. So it’s really not a light schedule - it’s more of a light randomizer. I am also considering putting the solution I had previously, a Philips Hue smart bulb, because it never had an issue with scheduling the lights on or off.