New York is exactly 3 hours ahead of San Francisco year-round. When it's 12:00 PM in San Francisco, it's 3:00 PM in New York. Both cities observe DST on the same schedule.
San Francisco uses Pacific Time (PST/PDT) while New York uses Eastern Time (EST/EDT). The 3-hour difference remains constant throughout the year.
Early morning SF works best! 6:00 AM - 2:00 PM San Francisco corresponds to 9:00 AM - 5:00 PM New York. West Coast morning catches East Coast business hours.
This is one of the most important business corridors in the US - Silicon Valley tech connects with Wall Street finance. JetBlue and United operate frequent transcontinental flights.