Time Zone Converter, World Clock, and Meeting Planner

Written byOleh Soloninupdated 25 September 2026

World Clock

Time zone converter and meeting planner

Compare cities on one shared timeline, move a single cursor through the day, and keep the same view in your browser, account, and URL.

Reference time

00:58

Prague, Czechia / Oct 7

Add city or time zone

Selected cities

Prague

Home

CzechiaUTC+2GMT+2

00:58

Wed, Oct 7

Now: 00:58Previous dayWeekend

New York

United StatesUTC-4EDT

18:58

Tue, Oct 6

Now: 18:58Previous dayWeekend

-1

Shared timeline

Drag the bar to move all cities together

00:58

00:0023:59

Prague

HomeUTC+2

Czechia / GMT+2

00:58

Wed, Oct 7

Now: 00:58

Previous day

New York

UTC-4

United States / EDT

18:58

Tue, Oct 6

Now: 18:58

Previous day

Every participant's local time, side by side

Convert time between cities and see several of them at once on a shared timeline, with daylight saving handled from real IANA rules. Built for scheduling calls.

Convert time between cities here and the two classic scheduling mistakes disappear: a forgotten date rollover, and a summer-time switch one country has already made and the other has not.

Because the switch dates differ — the EU changes on the last Sunday in March, the US in early March — the gap between two cities is not fixed. There are weeks each year when the usual difference is simply wrong.

How to use

Pick the city you are counting from and set the date and time.
Add the other people's cities — their local time appears alongside, with daylight saving applied.
Use the shared timeline to find an hour that falls inside everyone's working day.

Noon in London through the seasons

The table converts 12:00 in London on two dates. The gap to New York stays at five hours, while cities that never change their clocks, such as Dubai and Tokyo, move an hour closer in the British summer. Times come from the IANA time zone database.

Times from the IANA time zone database, the one the converter uses.
City	22 Sep 2026, 12:00 London	22 Jan 2027, 12:00 London
New York	07:00 (UTC−4)	07:00 (UTC−5)
Los Angeles	04:00 (UTC−7)	04:00 (UTC−8)
Berlin	13:00 (UTC+2)	13:00 (UTC+1)
Moscow	14:00 (UTC+3)	15:00 (UTC+3)
Dubai	15:00 (UTC+4)	16:00 (UTC+4)
Delhi	16:30 (UTC+5:30)	17:30 (UTC+5:30)
Tokyo	20:00 (UTC+9)	21:00 (UTC+9)
Sydney	21:00 (UTC+10)	23:00 (UTC+11)

What this calculator shows

Current local time for every city you add
A shared timeline for finding overlapping working hours
Daylight saving applied from live IANA zone rules, not fixed offsets

What to keep in mind

Uses IANA time zone data, which tracks legislative changes.
Working-hours shading assumes a conventional 09:00–18:00 day.

FAQs

Why did the difference between two cities change?

Daylight saving dates differ by country. The US springs forward in March, Europe on the last Sunday of March, and Australia moves in the opposite direction entirely.

How many cities can I compare?

Several at once. The timeline is designed for finding a slot that suits everyone, which is hard with only two columns.

Do countries without daylight saving simplify things?

For them, yes — but not for you. Japan and India never change, so their gap to Europe shifts twice a year anyway.

Is the underlying data kept up to date?

It uses the IANA database, the same source operating systems rely on, which is revised whenever a country changes its rules.

When do the clocks change in 2026?

In the UK and the EU on 29 March and 25 October, the last Sundays of those months. In the US on 8 March and 1 November. In Sydney the other way round: back on 5 April, forward on 4 October.

What is the time difference between London and Tokyo?

Eight hours in the British summer and nine in winter, because Japan does not use daylight saving: noon in London is 20:00 in Tokyo on 22 September 2026 and 21:00 on 22 January 2027.

Worked example

A call between London and New York

Input: London 15:00

Output: New York 10:00

Note: Most of the year the gap is five hours. In 2026 it is four from 8 to 28 March and from 25 to 31 October: the US moves its clocks three weeks before the UK in spring and a week after it in autumn.

Useful links

All tools in Date & Time World Clock Time Difference

Time Zone Converter, World Clock, and Meeting Planner

Time zone converter and meeting planner

Related tools

Jet Lag Calculator

Time Calculator

Hours Worked Calculator

Useful links