What time zone does the box use?

Does the box use the time zone from the home address or WiFi ip address or something? I hope it doesn’t synchronize with your phone because I travel a lot which will alter the start times at my home significantly.
What got me wondering about this is that, when setting up the second daily schedule, I would select a start time like 6 pm but afterwards the app would show something way off, like 6-7 hours different than the start time I just selected.
Thanks for the response!

The start time will be the time zone that the device was installed at. We use the coordinates of the device to determine the timezone.

Were your schedules stacked and running one after the other?