What is the normal time difference between London and Vienna?

Vienna is usually 1 hour ahead of London. London observes GMT (UTC+0) in winter and BST (UTC+1) in summer; Vienna observes CET (UTC+1) in winter and CEST (UTC+2) in summer. Because both countries shift their clocks on the same last Sunday in March and October, the gap stays at 1 hour year-round.

Is there ever a time when London and Vienna are the same time?

No. The UK and Austria change their clocks on the same EU-coordinated schedule (last Sunday in March and last Sunday in October), so the 1-hour gap is maintained throughout the year. This tool shows the real offset live.

When does the UK change its clocks?

The UK moves clocks forward on the last Sunday in March at 01:00 GMT (becoming BST, UTC+1) and back on the last Sunday in October at 02:00 BST (returning to GMT, UTC+0).

When does Austria (Vienna) change its clocks?

Austria moves clocks forward on the last Sunday in March at 02:00 CET (becoming CEST, UTC+2) and back on the last Sunday in October at 03:00 CEST (returning to CET, UTC+1). This matches the UK change day exactly.

What are good meeting times for both London and Vienna?

Because the gap is only 1 hour, almost all standard business hours overlap. A 09:00–17:00 London window corresponds to 10:00–18:00 Vienna. The meeting overlap finder on this page highlights those windows automatically.

Is this tool accurate for scheduling?

Yes. It uses the IANA timezone database embedded in your browser — the same source used by operating systems and calendar apps worldwide. Accuracy depends on your device clock being synchronized via NTP, which most devices do automatically.

Time Difference: London to Vienna

See the current time in London and Vienna side by side, with the exact hour offset and a business-hours overlap finder, updated live every second.

London, United Kingdom

--:--:--

GMT UTC+0

Vienna, Austria

--:--:--

CET UTC+1

Current Offset

+1 hour

Vienna is 1 hour ahead of London

Meeting Overlap Finder

Business hours (09:00–18:00) highlighted — best overlap shaded

London	Vienna	Status

Convert London Time to Vienna Time

Based on the current offset — updates automatically

London	Vienna

Summary

This tool displays the live current time in both London (Europe/London — GMT in winter, BST in summer) and Vienna (Europe/Vienna — CET in winter, CEST in summer) side by side. The exact offset is calculated automatically and adjusts whenever either city transitions for Daylight Saving Time. Use it to schedule calls between the UK and Austria, coordinate remote teams, or check whether a colleague in Vienna is still at their desk.

How it works

Your browser reads the current moment from your device clock.
It converts that moment to Europe/London time using the IANA timezone database built into modern browsers.
The same moment is converted to Europe/Vienna time.
The UTC offsets of both cities are compared to calculate the exact hour difference.
All three values — London time, Vienna time, and the offset — refresh every second.
DST transitions for both cities are handled automatically, so the offset switches correctly each spring and autumn.

Use cases

Scheduling video calls between London and Vienna offices.
Checking if a colleague in Vienna is still at their desk.
Planning UK-Austria travel with arrival time comparisons.
Remote teams coordinating daily standups across the UK and Austria.
Finding overlapping business hours for London-Vienna meetings.
Verifying whether both cities currently observe daylight saving time.
Journalists checking broadcast times for live Austrian events.
Students and teachers arranging online lessons between the UK and Austria.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu