Shanghai is 13 hours ahead of Atlanta during US summer (EDT), and 12 hours ahead during winter (EST). When it's 9:00 AM in Atlanta, it's 9:00 PM or 10:00 PM in Shanghai.
China uses a single timezone (CST, UTC+8) and doesn't observe DST.
Optimal window: 7:00 PM - 10:00 PM Atlanta time (8:00 AM - 11:00 AM Shanghai next day). Evening calls from Atlanta catch morning business hours in Shanghai.
Delta and China Eastern operate flights connecting Atlanta to Shanghai Pudong International Airport.