Current Time in Boston, United States

Boston follows the EST/EDT time zone, which is GMT-4 relative to Coordinated Universal Time (UTC). Boston observes Daylight Saving Time (DST), so the UTC offset shifts during summer months. Make sure to account for this when scheduling international meetings or calls. The IANA timezone identifier for Boston is `America/New_York`, which is the internationally standardized reference used by operating systems, programming languages, and scheduling software worldwide.

To convert the current time in Boston to another city, simply note the UTC offset (GMT-4) and calculate the difference. For example, if Boston is at GMT-4 and New York is at UTC-5, the difference is straightforward arithmetic. Our World Clock tool lets you compare Boston side-by-side with any other city in the world — no math needed.

Unlike static converters that show a snapshot, our live clock for Boston updates every second in real time. This is especially useful for: (1) Scheduling calls across time zones — see the exact moment in Boston before you dial. (2) Remote teams — if your colleagues are in Boston, always know if it's their working hours. (3) Travel planning — arrive prepared by tracking local time in Boston before your flight.

• Country: United States 🇺🇸 • Timezone Abbreviation: EST/EDT • UTC Offset: GMT-4 • IANA Identifier: America/New_York • Observes DST: Yes These details are pulled from the IANA Time Zone Database, the same source used by Apple, Google, and Microsoft for their system clocks.

Here is how Boston (GMT-4) compares to the world's three major business hubs: • vs. New York: Boston is the same time as New York. • vs. London: Boston is 5 hours behind London. • vs. Tokyo: Boston is 13 hours behind Tokyo. Note: These differences may shift slightly when Daylight Saving Time changes occur in any of these cities. Always confirm with a live clock when scheduling time-sensitive events.

If you're scheduling a call or meeting with someone in Boston from abroad, here are the optimal windows: • From the US (New York, ET): 9:00 AM–5:00 PM (when New York (ET) is 9 AM–5 PM) local Boston time. • From the UK (London, GMT/BST): 4:00 AM–12:00 PM (when London (GMT/BST) is 9 AM–5 PM) local Boston time. These windows align with standard 9 AM–5 PM business hours in the caller's location. Adjust for your specific team's working hours as needed.