London to New York Time Converter
New York is 5 hours behind London. When it is noon in London, it is 7:00 AM in New York.
Daylight saving note: Normally New York is 5 hours behind London. During short March/October transition windows, New York can be 4 hours behind while London is on GMT and New York is on EDT.
GMT to ET Conversion Table
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇬🇧 GMT | 🇺🇸 GMT → ESTUTC+0 to UTC-5 | 🇺🇸 BST → EDTUTC+1 to UTC-4 | 🇺🇸 GMT → EDTUTC+0 to UTC-4 transition weeks | Note |
|---|---|---|---|---|
| 00:00 | 7:00 PM | 7:00 PM | 8:00 PM | prev day |
| 01:00 | 8:00 PM | 8:00 PM | 9:00 PM | prev day |
| 02:00 | 9:00 PM | 9:00 PM | 10:00 PM | prev day |
| 03:00 | 10:00 PM | 10:00 PM | 11:00 PM | prev day |
| 04:00 | 11:00 PM | 11:00 PM | 12:00 AM | prev day |
| 05:00 | 12:00 AM | 12:00 AM | 1:00 AM | |
| 06:00 | 1:00 AM | 1:00 AM | 2:00 AM | |
| 07:00 | 2:00 AM | 2:00 AM | 3:00 AM | |
| 08:00 | 3:00 AM | 3:00 AM | 4:00 AM | |
| 09:00 | 4:00 AM | 4:00 AM | 5:00 AM | |
| 10:00 | 5:00 AM | 5:00 AM | 6:00 AM | |
| 11:00 | 6:00 AM | 6:00 AM | 7:00 AM | |
| 12:00 | 7:00 AM | 7:00 AM | 8:00 AM | |
| 13:00 | 8:00 AM | 8:00 AM | 9:00 AM | |
| 14:00 | 9:00 AM | 9:00 AM | 10:00 AM | |
| 15:00 | 10:00 AM | 10:00 AM | 11:00 AM | |
| 16:00 | 11:00 AM | 11:00 AM | 12:00 PM | |
| 17:00 | 12:00 PM | 12:00 PM | 1:00 PM | |
| 18:00 | 1:00 PM | 1:00 PM | 2:00 PM | |
| 19:00 | 2:00 PM | 2:00 PM | 3:00 PM | |
| 20:00 | 3:00 PM | 3:00 PM | 4:00 PM | |
| 21:00 | 4:00 PM | 4:00 PM | 5:00 PM | |
| 22:00 | 5:00 PM | 5:00 PM | 6:00 PM | |
| 23:00 | 6:00 PM | 6:00 PM | 7:00 PM |
"prev day" = converted time falls on the previous calendar day.
Best Hours to Schedule London–New York Calls
From London, New York becomes available at 2:00 PM GMT (9:00 AM EST). The overlap window is 2:00–5:00 PM London (9:00 AM–12:00 PM New York). London professionals working with US clients typically block afternoons for transatlantic calls.
About London (GMT)
London (GMT/BST) leads New York by 5 hours for most of the year. This means London's entire morning (9 AM–2 PM) passes before New York opens. Financial firms and media companies in London use this morning window for European client work, then switch to US-facing tasks from 2 PM.
About New York (ET)
New York (EST/EDT) runs 5 hours behind London. When New York opens at 9:00 AM EST, London is at 2:00 PM — already halfway through the afternoon. The brief 3-hour overlap (2–5 PM London / 9 AM–12 PM New York) is the core transatlantic business window.
How to Avoid London–New York Conversion Mistakes
Use the live clocks and the table for different jobs. The live clocks show the current offset between London and New York. The table gives you a stable reference for planning common hours. If the page has more than one table column, pick the column that matches the season or DST state shown in the column label.
Daylight saving is the main trap. Some pairs stay fixed all year, while others move by one hour because only one side changes clocks, or because the two sides change on different dates. That is why this page keeps the daylight saving note near the live clocks and labels alternate table scenarios instead of hiding the offset change in a paragraph.
Always check the calendar date when the converted time lands near midnight. A late evening time in London can become the next day in New York, and an early morning time can still be the previous day. If the table marks "next day" or "prev day", include that date shift in the message or calendar invite.
Abbreviations can be ambiguous. ET can mean EST or EDT; London can be GMT or BST; Sydney can be AEST or AEDT. City names and IANA time zones are safer for exact scheduling than abbreviations alone. For recurring meetings, test the same local time once in January and once in July before you lock it in.
For one-off events, enter the exact date and time in the main time zone converter or meeting scheduler if the table does not show your hour. That keeps the answer tied to the correct daylight saving rule instead of a memorized offset.
When you share the result, write both local times in one line: "10:00 AM GMT/ converted ET time." For client calls, flights, webinars, launches, and deadlines, also include the date. The extra wording feels repetitive, but it gives every recipient a second way to catch a timezone mistake before it becomes a missed meeting. It is especially helpful when someone forwards the invite to a third city.
Frequently Asked Questions
What time is 2 PM London in New York?
2:00 PM London (GMT) is 9:00 AM New York (EST). This is why London firms schedule US calls for the afternoon — 2 PM London is New York's 9 AM business open.
How many hours is New York behind London?
New York is 5 hours behind London for most of the year. During DST transitions, the gap can briefly be 4 hours when London is on GMT and New York is on EDT.
What time is it in New York when London is 9 AM?
9:00 AM London (GMT) is 4:00 AM New York (EST) — very early morning. London starts its working day well before New York.
What is the best time for a London-New York call from London?
2:00–5:00 PM London (GMT) maps to 9:00 AM–12:00 PM New York (EST). This is the standard London "US call block" — schedule all transatlantic meetings in this window.