San Juan is 1 hour ahead of New York during EST (winter), but the same time during EDT (summer). When it's 9:00 AM in New York (winter), it's 10:00 AM in San Juan. Puerto Rico does not observe DST.
The time difference changes because Puerto Rico stays on AST (Atlantic Standard Time, UTC-4) year-round while New York switches between EST and EDT.
Business hours align almost perfectly! In summer (EDT), both cities are on the same time. In winter, San Juan is just 1 hour ahead. Easy scheduling year-round.
San Juan is Puerto Rico's capital and a major Caribbean hub. JetBlue, United, and Spirit operate numerous daily flights to JFK, EWR, and LGA. Strong ties in tourism, pharmaceuticals, and the large Puerto Rican diaspora in NYC.