GMT to EDT Converter & Meeting Planner
Quick answer: 9:00 AM GMT = 5:00 AM EDT (fixed +00:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Greenwich Mean Time (GMT) and Eastern Daylight Time (EDT)? You need to account for the standard time difference. Eastern Daylight Time is normally 4 hours behind Greenwich Mean Time. Whether you are coordinating between teams in London and Dublin and New York and Washington D.C., our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM GMT = 8:00 PM EDT. The full 24-hour GMT to EDT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM GMT = 11:00 AM EDT.
| GMT Time | EDT Time |
|---|---|
| 12:00 AM (00:00) | 8:00 PM (20:00)-1 day |
| 1:00 AM (01:00) | 9:00 PM (21:00)-1 day |
| 2:00 AM (02:00) | 10:00 PM (22:00)-1 day |
| 3:00 AM (03:00) | 11:00 PM (23:00)-1 day |
| 4:00 AM (04:00) | 12:00 AM (00:00) |
| 5:00 AM (05:00) | 1:00 AM (01:00) |
| 6:00 AM (06:00) | 2:00 AM (02:00) |
| 7:00 AM (07:00) | 3:00 AM (03:00) |
| 8:00 AM (08:00) | 4:00 AM (04:00) |
| 9:00 AM (09:00) | 5:00 AM (05:00) |
| 10:00 AM (10:00) | 6:00 AM (06:00) |
| 11:00 AM (11:00) | 7:00 AM (07:00) |
| 12:00 PM (12:00) | 8:00 AM (08:00) |
| 1:00 PM (13:00) | 9:00 AM (09:00) |
| 2:00 PM (14:00) | 10:00 AM (10:00) |
| 3:00 PM (15:00) | 11:00 AM (11:00) |
| 4:00 PM (16:00) | 12:00 PM (12:00) |
| 5:00 PM (17:00) | 1:00 PM (13:00) |
| 6:00 PM (18:00) | 2:00 PM (14:00) |
| 7:00 PM (19:00) | 3:00 PM (15:00) |
| 8:00 PM (20:00) | 4:00 PM (16:00) |
| 9:00 PM (21:00) | 5:00 PM (17:00) |
| 10:00 PM (22:00) | 6:00 PM (18:00) |
| 11:00 PM (23:00) | 7:00 PM (19:00) |
Best time to call New York from London
For most work calls, compare the normal business day in London (GMT) with the business day in New York (EDT). GMT commonly covers Europe, Africa, while EDT is mainly associated with North America, Caribbean.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 2:00 PM - 5:00 PM GMT, which corresponds to 9:00 AM - 12:00 PM EDT. This window sits inside the typical GMT workday (9:00 AM - 5:00 PM) and the EDT workday (9:00 AM - 6:00 PM).
- DST Safety: GMT or EDT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- London Stock Exchange: 08:00-16:30 local time in London.
- New York Stock Exchange (NYSE): 09:30-16:00 local time in New York.
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Frequently Asked Questions
What is the time difference between GMT and EDT?
During standard time, Eastern Daylight Time is 4 hours behind Greenwich Mean Time.
What is the difference between GMT and BST?
GMT (Greenwich Mean Time) is the UK's standard winter offset at UTC+0, observed from the last Sunday in October through the last Sunday in March. BST (British Summer Time) is the daylight saving offset at UTC+1, applied each summer when clocks advance one hour.
Is GMT the same as UTC?
GMT and UTC share exactly the same numerical offset — both represent UTC+00:00 — but they are fundamentally different in nature. UTC is an atomic-clock-based international time standard used as the global reference, while GMT is a geographic time zone legally observed by specific countries including the United Kingdom and Ireland during winter months.
When does EDT start and end?
EDT begins on the second Sunday in March at 02:00 local time, when clocks spring forward one hour from EST (UTC-5) to EDT (UTC-4). It ends on the first Sunday in November at 02:00 local time, when clocks fall back to EST. In 2026, EDT runs from March 8 through November 1.
Is EDT the same as EST?
EDT and EST are two phases of the same Eastern Time zone, not two separate zones. EST (Eastern Standard Time) is the winter offset at UTC-5, observed from early November through mid-March. EDT (Eastern Daylight Time) is the summer offset at UTC-4, active during Daylight Saving Time — meaning New York and Toronto run one hour ahead of their winter clock for roughly eight months of every year.