I have several US cities on the World Clock and all times are showing incorrectly. For reference I’m Central time but Austin (central) is slowing an hour ahead. Miami (eastern) is showing an hour behind what it should.
I’m having the same issue with this app as well. I’ve deleted and re-added with three different global locales, one is local and all are incorrect. Local time here 10am and the app is showing 9pm. Meanwhile, other clock apps are displaying the correct local time.