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Greenwich Mean Time (GMT) is 4 hours ahead of Eastern Time (EST).

The time right now

Greenwich Mean Time

12:41 PM

GMT

Monday, October 26, 2026

Eastern Time

8:41 AM

EDT

Monday, October 26, 2026

To convert GMT to EST, subtract 4 hours. To convert EST to GMT, add 4 hours.

Difference
4 hours
Next change
Nov 1, 2026
Work overlap
4 hours

Change the date or the time to convert any moment from GMT to EST.

The zone the time above is in. Daylight saving is applied for the date you pick.

Up to 12 zones. Remove one with the × beside it.

UTC · Coordinated Universal Time (UTC)

9:00 AM UTC

Monday, October 26, 2026

The same moment on other clocks

  • New York

    Eastern Time (ET)

    5:00 AM EDT

    Before 9 AM

Working hours in common

4 hours inside 9 AM to 5 PM on every clock: 1:00 PM to 5:00 PM UTC time.

Mon, Oct 26, 2026, midnight to midnight on UTC time. Each bar shades 9 AM to 5 PM on that zone's own clock.

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Here is every hour of the day in GMT and the same moment in EST.

The green rows are the hours when both zones are inside 9 AM to 5 PM. The row marked Now is the hour it is in Greenwich Mean Time right now.

Each hour of the day in GMT with the same moment in EST
In GMTIn ESTAt work
12:00 AM8:00 PM-1 dayNeither at work
1:00 AM9:00 PM-1 dayNeither at work
2:00 AM10:00 PM-1 dayNeither at work
3:00 AM11:00 PM-1 dayNeither at work
4:00 AM12:00 AMNeither at work
5:00 AM1:00 AMNeither at work
6:00 AM2:00 AMNeither at work
7:00 AM3:00 AMNeither at work
8:00 AM4:00 AMNeither at work
9:00 AM5:00 AMGMT at work
10:00 AM6:00 AMGMT at work
11:00 AM7:00 AMGMT at work
12:00 PMNow8:00 AMGMT at work
1:00 PM9:00 AMBoth at work
2:00 PM10:00 AMBoth at work
3:00 PM11:00 AMBoth at work
4:00 PM12:00 PMBoth at work
5:00 PM1:00 PMEST at work
6:00 PM2:00 PMEST at work
7:00 PM3:00 PMEST at work
8:00 PM4:00 PMEST at work
9:00 PM5:00 PMNeither at work
10:00 PM6:00 PMNeither at work
11:00 PM7:00 PMNeither at work

A team split between GMT and ET is at work together for 4 hours a day.

Taking 9 AM to 5 PM on each clock as the working day, both zones are at work from 1:00 PM to 5:00 PM GMT (9:00 AM to 1:00 PM EST).

One day on GMT clocks, with the same moments read on EST clocks underneath.

A team spread across two time zones has fewer chances to notice someone drifting away. TeamPredict reads public LinkedIn signals to flag resignation risk early, wherever people work.

The gap between GMT and EST moves between 4 hours and 5 hours during the year.

Greenwich Mean Time never changes its clocks, but the United States does, so the gap moves by an hour each time Eastern Time moves.

Each bar is one calendar year, January on the left. Days are coloured by the gap between GMT and EST.

These are the clock changes of both zones in 2026 and 2027.

Clock changes of Greenwich Mean Time and Eastern Time in 2026 and 2027
DateWhat changesGap after
Sunday, March 8, 2026
  • Eastern Time: clocks go forward 1 hour at 2:00 AM, to 3:00 AM EDT.
4 hours
Sunday, November 1, 2026
  • Eastern Time: clocks go back 1 hour at 2:00 AM, to 1:00 AM EST.
5 hours
Sunday, March 14, 2027
  • Eastern Time: clocks go forward 1 hour at 2:00 AM, to 3:00 AM EDT.
4 hours
Sunday, November 7, 2027
  • Eastern Time: clocks go back 1 hour at 2:00 AM, to 1:00 AM EST.
5 hours

GMT stands for Greenwich Mean Time and EST for Eastern Time on this page.

GMT is UTC+0 all year and never changes. London uses GMT only in winter and moves to BST (UTC+1) in summer.

Eastern Time is EST (UTC−5) in winter and EDT (UTC−4) in summer. People write EST all year, and this page does too; the clock reads EDT right now. It moves its clocks forward at 2:00 AM on the second Sunday in March and back at 2:00 AM on the first Sunday in November.

These nearby time zone pairs show the time right now too.

The time zone converter reads one moment on up to 12 clocks, the military time converter turns 24-hour times into AM and PM, and the time duration calculator measures the hours between two moments.

Here are four questions about GMT to EST, answered.

What is 9 AM GMT in EST?
9:00 AM GMT is 5:00 AM EST, and 5:00 PM GMT is 1:00 PM EST. From Sunday, November 1, 2026 the gap is 5 hours, so 9:00 AM GMT is 4:00 AM EST.
What is the time difference between GMT and EST?
Greenwich Mean Time (GMT) is 4 hours ahead of Eastern Time (EST). The gap between GMT and EST moves between 4 hours and 5 hours during the year. Greenwich Mean Time never changes its clocks, but the United States does, so the gap moves by an hour each time Eastern Time moves. After today, it becomes 5 hours on Sunday, November 1, 2026 and then 4 hours on Sunday, March 14, 2027.
Is GMT the same as London time?
Only in winter. GMT is UTC+0 all year, while London moves to BST (UTC+1) in summer. London's clocks move on these days. In 2026: Mar 29 and Oct 25. In 2027: Mar 28 and Oct 31. For a London meeting in summer, use the BST to EST page.
What is a good time for a meeting between GMT and EST?
1:00 PM to 5:00 PM GMT (9:00 AM to 1:00 PM EST) is 4 hours when both sides are inside 9 AM to 5 PM, so a meeting there starts and ends in everyone's normal day.

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