Boston and New York share the same timezone year-round. When it's 12:00 PM in New York, it's also 12:00 PM in Boston. Both cities observe DST on the same schedule.
Both cities use Eastern Time (EST/EDT, UTC-5/-4). The entire Northeast corridor from Boston to Washington DC shares the same timezone.
Any time works! Business hours are identical. The Amtrak Acela connects the two cities in under 4 hours, and shuttle flights run every 30 minutes.
Boston and New York have strong business ties, especially in finance, biotech, and education. Many professionals commute between MIT/Harvard and Wall Street.