Phoenix is consistently 16 hours behind Tokyo year-round. Neither Phoenix (Arizona) nor Tokyo observe daylight saving time, making this one of the most stable time differences between US and Asian cities.
When it's 10:00 PM in Tokyo, it's 6:00 AM in Phoenix. This consistent difference makes scheduling predictable throughout the year.
Optimal meeting window: 5:00 AM - 7:00 AM Phoenix time (9:00 PM - 11:00 PM Tokyo). Very early morning Phoenix catches late evening Tokyo.
Phoenix's semiconductor industry works with Japanese electronics manufacturers, often requiring early morning calls.