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overlaply

EST to GMT

The difference month by month, the exact dates it changes, and what that means for a call between New York and London.

How far apart are EST and GMT?

GMT is 5 hours ahead of EST for most of the year.

When it is 9:00 AM in New York, it is 2:00 PM in London.

Right now

The current reading appears once this page finishes loading.

How does the difference change month by month?

Any answer that quotes one number for this pair is wrong for part of the year. Here is the difference in force in each month of 2026, with the exact day it changes.

Show the month-by-month table
Difference between EST and GMT by month, 2026
MonthDifferenceChanges onNew difference
January+5:00No change
February+5:00No change
March+5:00+4:00+5:00
April+5:00No change
May+5:00No change
June+5:00No change
July+5:00No change
August+5:00No change
September+5:00No change
October+5:00+4:00
November+5:00No change
December+5:00No change

Dates here are calendar dates in EST time. Where a clock change happens overnight, the calendar in the other zone can already have turned over.

When does the usual difference not hold?

4 such windows fall in 2026 and 2027.

The two zones move their clocks on different dates, so for part of the year the usual difference is out by an hour. The table dates every period of constant difference, short and long.

Show every dated difference period
Every period of constant difference, 2026 to 2027
FromUntilDifferenceDays
+5:0066
+4:0021
+5:00210
+4:007
+5:00133
+4:0014
+5:00217
+4:007
+5:0055

Every offset on this page comes from IANA tzdata 2026c, released . The pinned table covers 2024–2032. How these times are derived