When it is 09:00 in London it is 10:00 in Vienna in January and 10:00 in July. Vienna is 1 hour ahead London right now — and the difference is the same all year. This page gives the live times in both cities, the overlap between their working days, the daylight saving dates that move the difference, and the best meeting windows.
Try the tool: Time Zone Converter — convert any time between London and Vienna, with the offset for the date you pick.
Live times in London and Vienna
The two cities side by side. The January column uses the winter offsets (London UTC+00:00, Vienna UTC+01:00); the July column uses the summer offsets (London UTC+01:00, Vienna UTC+02:00).
| Time in London | Vienna in January | Vienna in July |
|---|---|---|
| 00:00 | 01:00 | 01:00 |
| 06:00 | 07:00 | 07:00 |
| 09:00 | 10:00 | 10:00 |
| 12:00 | 13:00 | 13:00 |
| 15:00 | 16:00 | 16:00 |
| 17:00 | 18:00 | 18:00 |
| 21:00 | 22:00 | 22:00 |
The world clock shows the current time in both cities live, and the individual city pages — time in London and time in Vienna — explain each city's time zone, offsets and daylight saving in full.
The time difference between London and Vienna
The difference is constant: Vienna is 1 hour ahead London on every day of the year. That is the simplest case in time-zone work — the answer does not depend on the date, and a meeting set for 09:00 in London is always 10:00 in Vienna. The reason the difference never changes is that both cities observe daylight saving and change their clocks on the same dates.
To convert a time, add the difference: 09:00 in London is 10:00 in Vienna in January and 10:00 in July; 17:00 in London — the end of the working day — is 18:00 in Vienna in January and 18:00 in July. To go the other way, subtract it: 09:00 in Vienna is 08:00 in London in January. The time difference calculator does the arithmetic for any date, and the UTC to Vienna page gives the full conversion table for Vienna.
Meeting overlap between London and Vienna
The overlap is the hours when both cities are in their working day (09:00–17:00 local time). The table marks the overlapping hours in London's working day and shows what time they are in Vienna.
January
| London time | Vienna time | Both working? |
|---|---|---|
| 09:00 | 10:00 | No |
| 10:00 | 11:00 | No |
| 11:00 | 12:00 | No |
| 12:00 | 13:00 | No |
| 13:00 | 14:00 | No |
| 14:00 | 15:00 | No |
| 15:00 | 16:00 | No |
| 16:00 | 17:00 | No |
In January the overlap is 0 hours: there is no hour when both cities are in their working day. In July it is 0 hours: there is no hour when both cities are in their working day. The two working days do not overlap at all — the difference is too large. The only options are to meet at the edge of the day, to rotate the awkward hour, or to record the meeting.
Daylight saving in London and Vienna
London observes daylight saving: in 2026 the clocks go forward on 29 March 2026 and back on 25 October 2026, moving the offset from UTC+00:00 to UTC+01:00.
Vienna observes daylight saving: in 2026 the clocks go forward on 29 March 2026 and back on 25 October 2026, moving the offset from UTC+01:00 to UTC+02:00.
The difference never changes, so there is no date on which a standing meeting moves. That does not mean the difference is the same as the difference with a third city — the difference between London and London, for example, may still move when London changes its clocks. The individual DST pages — London DST 2026 and Vienna DST 2026 — give the exact dates for each city.
Best meeting windows
There is no window inside both working days, in January or in July. The least-bad options are the edges: 08:00 in London is 09:00 in Vienna in January — before the working day in London but a reasonable evening in Vienna — and 17:00 in London is 18:00 in Vienna, which is the morning in Vienna the next day if the difference is large. Rotate the early start between the two sides, week by week, so the same people are not always the ones getting up early.
Calling and travel notes
When it is 09:00 in London it is 10:00 in Vienna in January; when it is 12:00 in London it is 13:00 in Vienna; when it is 17:00 in London it is 18:00 in Vienna. The difference is under 12 hours, so the two cities are usually on the same date — but check the date for late-evening and early-morning times, when the date can differ by a day. Scheduling inside Europe is the simplest case: most European countries change their clocks on the same dates (the last Sunday of March and the last Sunday of October), so the difference between London and Vienna is constant all year. The working days overlap for most of the day, and the only exceptions are the countries that have abolished the change — Iceland, Russia, Belarus and Türkiye.
Worked conversions
Six conversions, for January (offsets London UTC+00:00, Vienna UTC+01:00):
| London | Vienna |
|---|---|
| 08:00 | 09:00 |
| 09:00 | 10:00 |
| 12:00 | 13:00 |
| 14:00 | 15:00 |
| 17:00 | 18:00 |
| 20:00 | 21:00 |
In July, the answers are the same. For the reverse direction, see Vienna to London time.
London and Vienna at a glance
| Fact | London | Vienna |
|---|---|---|
| Country | United Kingdom | Austria |
| Region | Europe | Europe |
| IANA time zone | Europe/London |
Europe/Vienna |
| Standard offset | UTC+00:00 | UTC+01:00 |
| Daylight saving offset | UTC+01:00 | UTC+02:00 |
| Offset in January 2026 | UTC+00:00 | UTC+01:00 |
| Offset in July 2026 | UTC+01:00 | UTC+02:00 |
| Observes daylight saving | Yes | Yes |
The table is the whole pair in one place. The two numbers that matter most are the January and July offsets: if they are the same in both columns for a city, that city's offset never changes; if they differ, the city observes daylight saving and the difference between the cities moves with it. The individual city pages — time in London and time in Vienna — explain each city's time zone, and the DST pages — London DST 2026 and Vienna DST 2026 — give the exact change dates.
Frequently asked questions
What is the time difference between London and Vienna?
Vienna is 1 hour ahead London right now. In January the difference is 1 hour ahead and in July it is 1 hour ahead — it is the same all year.
How do I schedule a recurring meeting between London and Vienna?
Pick a time inside the overlap — the edge of the day, since there is no overlap — and set the calendar event in UTC so it moves correctly when the clocks change. Re-check the overlap in March and October, when the difference moves, and rotate the time if the meeting falls outside someone's working day.
What time is it in Vienna when it is 09:00 in London?
It is 10:00 in January and 10:00 in July. The time zone converter gives the answer for any date.
What is the best time for a meeting between London and Vienna?
There is no hour inside both working days. Meet at the edge of the day — early morning in one city, evening in the other — and rotate the awkward hour.
Does the time difference between London and Vienna change during the year?
No. The difference is 1 hour ahead all year, because both cities change their clocks on the same dates.
What time is it in London when it is 09:00 in Vienna?
It is 08:00 in January and 08:00 in July. See Vienna to London time for the full comparison from Vienna's side.
What are the time zones of London and Vienna?
London is in Europe/London (UTC+00:00 standard time) and Vienna is in Europe/Vienna (UTC+01:00 standard time).
What time is it in London when it is midnight in Vienna?
It is 23:00 in London in January and 23:00 in July — the same day, because London is ahead of Vienna. Midnight conversions are the ones that most often land on the wrong date, so always check the date as well as the time.
Sources
- IANA Time Zone Database, via Node.js Intl (
Intl.DateTimeFormatwithtimeZone) — offsets, daylight saving dates and local times in this article were worked out from the IANA database, not typed from memory. - TimeFlow's own time-zone data (
data/cities.ts,data/dst.ts), computed from the IANA database. - TimeFlow's time zone converter and meeting planner — the live tools behind the numbers on this page.
- Time-zone and daylight saving rules are set by governments and can change. For flights, deadlines and meetings that cannot move, confirm the time with an official source.