GMT to EST Time Converter
Compare London and New York time for transatlantic work and travel. This date-aware converter shows whether each city is using its standard or daylight abbreviation.
GMT and Eastern Standard Time explained
GMT is Greenwich Mean Time at UTC+0, while EST is Eastern Standard Time at UTC-5 in New York. These are standard-time labels; London and New York can use summer abbreviations on other dates.
London to New York time difference
London is five hours ahead of New York when London is on GMT and New York is on EST. A 2:00 PM meeting in London is 9:00 AM in New York in that standard-time pairing.
London changes to BST and New York changes to EDT during daylight time. Since the UK and United States change clocks on different calendar dates, the difference can briefly be four hours near the transitions.