At 09:00 in Berlin on a January morning, it is 03:00 in New York and 00:00 in Los Angeles. The 6-hour gap between Central European Time and US Eastern Standard Time is the number most people learn. It is not the whole story. The gap shrinks to 5 hours for two short windows each year because the EU and the USA change their clocks on different dates. The misalignment catches frequent flyers, derails quarterly earnings calls, and shifts live-broadcast audiences by an hour.
What is the time difference between CET and EST?
Continental Europe spans three main time zones. The continental USA spans four. During winter, when both sides are on standard time, the offsets stack up like this:
| European zone (standard) | US Eastern (EST) | US Central (CST) | US Mountain (MST) | US Pacific (PST) |
|---|---|---|---|---|
| Western European Time (WET, UTC+0) | 5 hours ahead | 6 hours ahead | 7 hours ahead | 8 hours ahead |
| Central European Time (CET, UTC+1) | 6 hours ahead | 7 hours ahead | 8 hours ahead | 9 hours ahead |
| Eastern European Time (EET, UTC+2) | 7 hours ahead | 8 hours ahead | 9 hours ahead | 10 hours ahead |
CET is the de facto business lingua franca. Germany, France, Italy, Spain, the Netherlands, and most of the continent run on CET (UTC+1) in winter and Central European Summer Time (CEST, UTC+2) in summer. The UK, Ireland, and Portugal use Western European Time (UTC+0, summer UTC+1). Greece, Romania, Bulgaria, Finland, and the Baltic states use Eastern European Time (UTC+2, summer UTC+3).
For a transatlantic call, the CET-to-EST gap of 6 hours is the reference point.
CET to EST and PST: the standard gaps
When both Europe and the USA are on standard time:
- CET to EST (New York): 6 hours ahead
- CET to CST (Chicago): 7 hours ahead
- CET to MST (Denver): 8 hours ahead
- CET to PST (Los Angeles): 9 hours ahead
At 15:00 in Paris (CET), it is 09:00 in New York (EST) and 06:00 in Los Angeles (PST). This is the gap most people memorise. The problem: the EU and the USA do not switch to daylight saving time on the same dates.
When DST schedules clash
The EU follows a fixed schedule. Clocks go forward on the last Sunday of March at 01:00 UTC and fall back on the last Sunday of October at 01:00 UTC. The USA starts DST on the second Sunday of March and ends it on the first Sunday of November.
That creates two periods each year when the transatlantic gap drops from 6 hours to 5 hours.
The March gap: the USA springs forward first
In 2026, the USA begins DST on Sunday, 8 March at 02:00 local time, moving from EST (UTC-5) to EDT (UTC-4). Europe follows three weeks later, on Sunday, 29 March, when clocks jump from CET (UTC+1) to CEST (UTC+2).
From 8 March to 29 March 2026, the gap between CET and New York shrinks by one hour:
- Before 8 March: CET is 6 hours ahead of EST.
- 8-29 March 2026: CET is 5 hours ahead of EDT.
At 14:00 in Berlin, it is 09:00 in New York, not 08:00 as it would be in deep winter.
A 09:00 call in New York lands at 14:00 in Berlin, still inside the European business afternoon but tighter than the usual 15:00. For West Coast teams, 09:00 in Los Angeles hits Berlin at 17:00, pushing the call to the very end of the European workday.
The October gap: Europe falls back first
Europe ends summer time on Sunday, 25 October 2026, falling back from CEST (UTC+2) to CET (UTC+1). The USA stays on EDT until Sunday, 1 November 2026.
From 25 October to 1 November 2026, the gap is again 5 hours: CET (UTC+1) versus EDT (UTC-4). After 1 November, the USA drops back to EST (UTC-5) and the standard 6-hour gap returns.
How to schedule calls across the Atlantic
Book transatlantic calls in the window that overlaps US East Coast mornings with European afternoons.
| US Eastern time | CET/CEST | Verdict |
|---|---|---|
| 08:00 EST | 14:00 CET | Good overlap |
| 09:00 EST | 15:00 CET | Ideal |
| 10:00 EST | 16:00 CET | Late in Europe but workable |
| 07:00 PST | 16:00 CET | Late in Europe, early on the US West Coast |
The core meeting window runs 09:00-16:00 CET. That maps to 03:00-10:00 EST and 00:00-07:00 PST. US East Coast mornings are the sweet spot.
For live broadcasts, a 20:00 CET event airs at 14:00 EST on the US East Coast. A 20:00 EST US event airs at 01:00 or 02:00 CET the next day. Schedule European product launches for early evening local time to catch the US East Coast afternoon.
Red-eye flights from the USA land in Europe in the morning local time, which helps with jet lag. Flights from Europe to the USA depart in the late morning or early afternoon and arrive in the early afternoon US time, stretching the day.
Europe to USA time difference by season
| Season | European zone | US Eastern zone | Gap | Berlin to New York example |
|---|---|---|---|---|
| Winter (November, March) | CET (UTC+1) | EST (UTC-5) | 6 hours | 15:00 → 09:00 |
| March (2-3 weeks) | CET (UTC+1) | EDT (UTC-4) | 5 hours | 14:00 → 09:00 |
| Summer (April, October) | CEST (UTC+2) | EDT (UTC-4) | 6 hours | 15:00 → 09:00 |
| October (1 week) | CET (UTC+1) | EDT (UTC-4) | 5 hours | 14:00 → 09:00 |
The summer gap matches the winter gap because both sides move their clocks in the same direction. Only the brief misalignment windows shift the difference.
Europe to USA time difference: key dates for 2026-2027
| Event | Date | Effect on the gap |
|---|---|---|
| USA DST starts | Sunday, 8 March 2026 | Gap shrinks to 5 hours |
| Europe DST starts | Sunday, 29 March 2026 | Gap returns to 6 hours |
| Europe DST ends | Sunday, 25 October 2026 | Gap shrinks to 5 hours |
| USA DST ends | Sunday, 1 November 2026 | Gap returns to 6 hours |
| USA DST starts | Sunday, 14 March 2027 | Gap shrinks to 5 hours |
| Europe DST starts | Sunday, 28 March 2027 | Gap returns to 6 hours |
| Europe DST ends | Sunday, 31 October 2027 | Gap shrinks to 5 hours |
| USA DST ends | Sunday, 7 November 2027 | Gap returns to 6 hours |
UK, Portugal, and Eastern Europe: different gaps
CET is the business standard, but not every country uses it.
The UK, Ireland, and Portugal run on WET (UTC+0) in winter and WEST (UTC+1) in summer. They sit 5 hours ahead of New York in winter and 5 hours ahead in summer. Greece, Romania, Bulgaria, Finland, and the Baltic states run on EET (UTC+2) in winter and EEST (UTC+3) in summer, 7 hours ahead of New York year-round.
A call from London to New York has a 5-hour gap, one hour less than from Paris or Berlin. A call from Helsinki to New York has a 7-hour gap. The specific city matters, not the continent.
How to avoid the Europe to USA time gap mistake
The gap between CET and EST is 6 hours for most of the year. It drops to 5 hours for 2-3 weeks in March and for 1 week in late October and early November. When it is noon in New York, it is 18:00 in Berlin. When it is noon in Berlin, it is 06:00 in New York.
Mark Sunday, 8 March 2026 on your calendar. That is the day the USA moves to EDT and the gap narrows to 5 hours. Move any recurring transatlantic meeting that week forward by one hour in the European calendar, or push it back by one hour in the US calendar. The gap snaps back to 6 hours on Sunday, 29 March 2026 when Europe follows.