As you change time zones, the timeline scale will shift as necessary to match the time zone you are in, as well as all start and end times on all recorded time.

When you create a report, all time will be reported based on the current time zone, so if you recorded a time block in Los Angeles from 3pm to 4pm, and then return to New York and report it from New York, the time will be reported as 6pm to 7pm. If you want to report your time based on a different base time zone than the one you are in, then manually change the time zone on your device and the reporting will shift to the time zone you set.

If a time block spans across midnight based on the time zone you are reporting from when you generate a report, then the time block will be split into two blocks, with the pre-midnight time reported on one day and the post-midnight time reported on the following day.