San Francisco is 3 hours behind Atlanta. When it's 12:00 PM in Atlanta, it's 9:00 AM in San Francisco. Both cities observe DST, maintaining the 3-hour difference year-round.
Atlanta uses ET (Eastern Time) while San Francisco uses PT (Pacific Time).
Optimal window: 12:00 PM - 5:00 PM Atlanta time (9:00 AM - 2:00 PM SF). Midday to afternoon calls from Atlanta reach San Francisco during morning business hours.
Delta, United, and Southwest operate frequent direct flights between Atlanta Hartsfield-Jackson and San Francisco International Airport.