Skip to content
Timezone Prime

EST to GMT converter

Convert Eastern Time (EST/EDT) to Greenwich Mean Time (GMT), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

EDT 9 to 5 GMT 9 to 5

From zone
Eastern Daylight Time
Offset and clock
UTC−4 Daylight saving time
IANA name
America/New_York
To zone
Coordinated Universal Time
Offset and clock
UTC+0 No daylight saving time
IANA name
Etc/GMT

GMT is 4 hours ahead of EDT.

Time difference
GMT is 4 hours ahead of EDT for most of the year (238 days in 2026). The gap is 5 hours for about 18 weeks in 2026.
Meeting window
Working days of 9 AM to 5 PM overlap from 9:00 AM to 1:00 PM EDT, which is 1:00 PM to 5:00 PM GMT while EDT and GMT apply.
Daylight saving
Eastern Time changes its clocks twice a year; Greenwich Mean Time does not.

The same conversion works for every city on these clocks, such as New York to Greenwich and Toronto to Greenwich.

Where EST and GMT apply

Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.

  • Eastern Time
  • Greenwich Mean Time
  • Same UTC offset right now, different zone rules

Drag to pan. Ctrl and scroll, or pinch, to zoom. Boundaries: timezone-boundary-builder, © OpenStreetMap contributors

Hour by hour

Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.

Shaded rows fall inside working hours in both places.

Hourly comparison of the two time zones. Choose a time to load it in the converter.
New York (EDT) Greenwich (GMT) Working hours
12:00 AM 4:00 AM
1:00 AM 5:00 AM
2:00 AM 6:00 AM
3:00 AM 7:00 AM
4:00 AM 8:00 AM
5:00 AM 9:00 AM
6:00 AM 10:00 AM
7:00 AM 11:00 AM
8:00 AM 12:00 PM
9:00 AM 1:00 PM Both working
10:00 AM 2:00 PM Both working
11:00 AM 3:00 PM Both working
12:00 PM 4:00 PM Both working
1:00 PM 5:00 PM
2:00 PM 6:00 PM
3:00 PM 7:00 PM
4:00 PM 8:00 PM
5:00 PM 9:00 PM
6:00 PM 10:00 PM
7:00 PM 11:00 PM
8:00 PM 12:00 AM next day
9:00 PM 1:00 AM next day
10:00 PM 2:00 AM next day
11:00 PM 3:00 AM next day

EST to GMT conversion table

Every hour of the Eastern Time day, plus the common half hours, and their GMT equivalents. The second column covers the part of the year when the clocks are on a different gap.

EST to GMT conversion table
Eastern Time GMT 4 h ahead, most of the year (238 days in 2026) GMT 5 h ahead, about 18 weeks in 2026
12:00 AM 4:00 AM5:00 AM
1:00 AM 5:00 AM6:00 AM
2:00 AM 6:00 AM7:00 AM
3:00 AM 7:00 AM8:00 AM
4:00 AM 8:00 AM9:00 AM
5:00 AM 9:00 AM10:00 AM
6:00 AM 10:00 AM11:00 AM
7:00 AM 11:00 AM12:00 PM
8:00 AM 12:00 PM1:00 PM
9:00 AM 1:00 PM2:00 PM
9:30 AM 1:30 PM2:30 PM
10:00 AM 2:00 PM3:00 PM
10:30 AM 2:30 PM3:30 PM
11:00 AM 3:00 PM4:00 PM
11:30 AM 3:30 PM4:30 PM
12:00 PM 4:00 PM5:00 PM
12:30 PM 4:30 PM5:30 PM
1:00 PM 5:00 PM6:00 PM
1:30 PM 5:30 PM6:30 PM
2:00 PM 6:00 PM7:00 PM
2:30 PM 6:30 PM7:30 PM
3:00 PM 7:00 PM8:00 PM
3:30 PM 7:30 PM8:30 PM
4:00 PM 8:00 PM9:00 PM
4:30 PM 8:30 PM9:30 PM
5:00 PM 9:00 PM10:00 PM
5:30 PM 9:30 PM10:30 PM
6:00 PM 10:00 PM11:00 PM
7:00 PM 11:00 PM12:00 AM (next day)
8:00 PM 12:00 AM (next day)1:00 AM (next day)
9:00 PM 1:00 AM (next day)2:00 AM (next day)
10:00 PM 2:00 AM (next day)3:00 AM (next day)
11:00 PM 3:00 AM (next day)4:00 AM (next day)

How the gap changes in 2026 and 2027

Each row is a stretch of days with one constant difference, split at every clock change.

Time difference periods between EST and GMT
Dates EST GMT Difference
Thu, Jan 1, 2026 until Sun, Mar 8, 2026 EST GMT GMT 5 h ahead
Sun, Mar 8, 2026 until Sun, Nov 1, 2026 EDT GMT GMT 4 h ahead
Sun, Nov 1, 2026 until Sun, Mar 14, 2027 EST GMT GMT 5 h ahead
Sun, Mar 14, 2027 until Sun, Nov 7, 2027 EDT GMT GMT 4 h ahead
Sun, Nov 7, 2027 until Sat, Jan 1, 2028 EST GMT GMT 5 h ahead

Upcoming clock changes

  1. Eastern Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
  2. Eastern Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  3. Eastern Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  4. Eastern Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM

About the two zones

Eastern Time (EST / EDT)

Eastern Time follows the clock in New York. It is Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) from the second Sunday in March to the first Sunday in November.

IANA zone
America/New_York
Offset
UTC−5 standard, UTC−4 daylight saving
Used in
the eastern United States and Canada
Major cities
New York, Toronto, Washington, D.C., Atlanta, Miami, Boston

People often write EST all year round. Strictly, EST is only the winter offset; in summer the eastern US is on EDT. The converter follows the real New York clock for the date you pick.

Greenwich Mean Time (GMT)

Greenwich Mean Time is UTC+0 and, for everyday purposes, the same clock as UTC. It does not shift for daylight saving time.

IANA zone
Etc/GMT
Offset
UTC+0 all year
Used in
Iceland and much of West Africa keep this offset all year
Major cities
Reykjavík, Accra, Dakar, Abidjan

The UK uses GMT only in winter and British Summer Time (BST, UTC+1) in summer. For London time, use the UK time pages.

EST and GMT, answered

What is the time difference between EST and GMT?

GMT is 4 hours ahead of EDT for most of the year (238 days in 2026). The gap is 5 hours for about 18 weeks in 2026.

How do I work out the time in Greenwich from EST?

Greenwich uses Greenwich Mean Time. GMT is 4 hours ahead of EDT for most of the year (238 days in 2026). The gap is 5 hours for about 18 weeks in 2026. Type any EST time into the EST to GMT converter to see the Greenwich time for any date.

What is 9:00 AM EST in GMT?

9:00 AM EDT is 1:00 PM GMT for most of the year (238 days in 2026). 9:00 AM EST is 2:00 PM GMT for about 18 weeks in 2026.

What is 12:00 PM EST in GMT?

12:00 PM EDT is 4:00 PM GMT for most of the year (238 days in 2026). 12:00 PM EST is 5:00 PM GMT for about 18 weeks in 2026.

What is 10:00 AM EST in GMT?

10:00 AM EDT is 2:00 PM GMT for most of the year (238 days in 2026). 10:00 AM EST is 3:00 PM GMT for about 18 weeks in 2026.

What is 5:00 PM EST in GMT?

5:00 PM EDT is 9:00 PM GMT for most of the year (238 days in 2026). 5:00 PM EST is 10:00 PM GMT for about 18 weeks in 2026.

Is GMT ahead of EST, and by how many hours?

Yes. GMT is 4 hours ahead of EDT for most of the year (238 days in 2026). The gap is 5 hours for about 18 weeks in 2026.

What is a good meeting time for EST and GMT?

Working days of 9 AM to 5 PM overlap from 9:00 AM to 1:00 PM EDT, which is 1:00 PM to 5:00 PM GMT while EDT and GMT apply.

Does daylight saving time affect EST to GMT?

Eastern Time changes its clocks twice a year; Greenwich Mean Time does not. The next change is on Sunday, November 1, 2026 in Eastern Time.

Which EST does the EST to GMT converter use?

People often write EST all year round. Strictly, EST is only the winter offset; in summer the eastern US is on EDT. The converter follows the real New York clock for the date you pick.

Which GMT does the EST to GMT converter use?

The UK uses GMT only in winter and British Summer Time (BST, UTC+1) in summer. For London time, use the UK time pages.

Related conversions

From Eastern Time

To Greenwich Mean Time