Best Time to Call Europe from the US

Time Difference Overview

Europe spans multiple time zones. UK time (London, GMT in winter and BST in summer) and CET (Berlin, Paris, Amsterdam) are the most common for business scheduling with the US. Both observe Daylight Saving Time, but on different dates than the US.

Work Hours Overlap

Visual timeline showing 9 AM -- 6 PM work hours for US and European time zones, with overlap highlighted.

US Eastern and CET share a solid 3-hour overlap window during standard business hours for most of the year. US Pacific has a tighter window -- European colleagues are nearing end of day by the time West Coast offices open.

ET to CET Conversion Table

Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.

Best Meeting Times

Top ranked time slots for a 1-hour US East -- CET Europe meeting with standard 9 AM -- 6 PM work hours.

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The DST Desync Problem

The US and Europe both observe Daylight Saving Time, but they change clocks on different dates. The US springs forward on the second Sunday of March; Europe waits until the last Sunday of March. In autumn, Europe falls back on the last Sunday of October; the US waits until the first Sunday of November. During these gap windows, the time difference between the US and Europe is off by one hour from what teams expect.

For detailed transition dates and autumn desync, see our US DST team impact guide.

Practical Tips for US-Europe Scheduling

The US-Europe corridor is one of the busiest for transatlantic business. These tips help you maximize the overlap and avoid DST surprises.

• US morning is the golden window. For ET-CET teams, 9:00 AM -- 12:00 PM Eastern corresponds to 3:00 PM -- 6:00 PM in Berlin. This gives both sides core business hours. For PT-CET teams, the window is tighter: 8:00 AM -- 9:00 AM Pacific (5:00 PM -- 6:00 PM in Berlin) is often the only workable slot. These times hold outside the DST desync weeks, when Berlin is one hour earlier.
• Block "Europe overlap" on US calendars. If you have European colleagues, protect the 9 AM -- 12 PM ET block from being filled with US-only meetings. This is the only window where both sides can collaborate in real time.
• Send DST desync reminders. Every March and October/November, proactively message all cross-Atlantic participants about upcoming clock changes. A simple note -- "US clocks change this Sunday; our meeting time will temporarily shift by 1 hour for European participants" -- prevents confusion.
• Schedule using IANA time zones, not offsets. When creating calendar events, use "America/New_York" and "Europe/Berlin" rather than "UTC-5" and "UTC+1." Calendar apps handle DST transitions automatically with IANA identifiers. Fixed UTC offsets break twice a year.
• Distribute pain fairly for PT-CET teams. With a 9-hour gap for most of the year, either the West Coast team starts early or the European team stays late. Rotate weekly: one week at 8 AM PT / 5 PM in Berlin, the next at 7 AM PT / 4 PM in Berlin (or 9 AM PT / 6 PM in Berlin). Make the schedule predictable so people can plan around it.
• Use the Meeting Planner for multi-zone teams. If your team spans both US coasts plus Europe, the optimal slot shifts. The Meeting Planner ranks every possible hour and shows exactly who is affected.

Related Resources

• Meeting Planner -- Find the best overlap window with custom work hours for your specific team.
• How US DST Affects International Teams -- Detailed breakdown of spring/fall transitions and the desync windows.
• Best Time to Call India from the US -- Scheduling guide for the US-India corridor.
• Best Time to Call Japan from the UK -- Scheduling guide for the UK-Japan corridor.
• Scheduling Across Time Zones -- Best practices for fairness and reducing late-night calls.