I'm not sure if this is serious or sarcastic. I've played around endlessly with the settings and have finally come to a method which works only vaguely. I keep time zone support on and set it to my home time. This seems to mean that the machine does not automatically change the times of all of my appointments when I travel. However when I enter appointments automatically (eg airline flights directly from the email confirmation or the app), these come in at the incorrect time and all need manually changing.