Can someone explain timezones in ST to me?

I cab confirm that it does NOT work. I am visiting my son in a Timezone 3 hours away. When I changed a rule to switch off my fish tank lights at home, it used my iPhone time and not the hub time. So the rule was wrong. The initial rule showed the hub time correctly. Also found its beter to manually set my phone time to hub time. But that’s a pain and I often check my devices to see if things are right home. Please fix this.