Convert EST to GMT
New York is the start zone and London is on the list. Type the New York time and read it in London.
- Runs on your device
- No sign-up
- Works offline after a visit
This page opens the time zone converter with New York as the start zone and London added to the cards. London is on GMT (UTC+0) in winter and on British Summer Time (UTC+1) in summer, and the London card shows whichever applies on the date you pick.
London is 5 hours ahead of New York for most of the year. The gap is 4 hours for a few weeks, because the US moves its clocks on the second Sunday of March and the first Sunday of November, while the UK moves on the last Sunday of March and the last Sunday of October.
How to convert time between time zones
- Enter the date, the time and the zone that time is in.
- Add the cities or zones you want to compare.
- Read each local time, then the strips for shared working hours.
Questions
Is GMT the same as London time?
Only in winter. In summer London is on British Summer Time, one hour ahead of GMT, and its card shows UTC+01:00.
What is 9:00 AM in New York in London?
It is 2:00 PM in London for most of the year. In the weeks when only one side has changed its clocks, it is 1:00 PM.
How do I convert a time to another time zone?
Find each zone’s UTC offset on that date, then add or subtract the difference. London is UTC+1 in summer, so 09:00 in London is 08:00 UTC, which is 17:00 in Tokyo (UTC+9).
Why do UTC offsets change during the year?
Many places move their clocks for daylight saving time, so their offset from UTC changes twice a year. Check the date you are converting, not only today’s offset.
Why does a zone show +1 day?
The converted time falls on a different calendar date in that zone, so it is the next day (+1) or the previous day (−1). Late evening in New York is often the next morning in Tokyo.
What do the working-hour strips show?
Each strip follows the starting zone’s day, hour by hour. Shaded cells are 09:00 to 17:00 in that row’s zone, so you can see where the working hours of several zones overlap. On a clock-change day, an hour that does not exist (such as 02:00 when clocks go forward) is left as an empty outline.
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