Global World Clock: Live Local Times and Timezone Converter
Scheduling international business conferences, remote team syncs, or overseas video calls across multiple time zones is difficult with Daylight Saving Time shifts. The Global World Clock displays live synchronized local clocks across major international cities and converts meeting times across timezones.
Boston
USA
15:25
Wednesday, September 9, 2026
Canberra
Australia
05:25
Thursday, September 10, 2026
London
UK
20:25
Wednesday, September 9, 2026
Miami
USA
15:25
Wednesday, September 9, 2026
New York
USA
15:25
Wednesday, September 9, 2026
Philadelphia
USA
15:25
Wednesday, September 9, 2026
Sydney
Australia
05:25
Thursday, September 10, 2026
Tokyo
Japan
04:25
Thursday, September 10, 2026
Washington DC
USA
15:25
Wednesday, September 9, 2026
Abidjan
Ivory Coast
19:25
Wednesday, September 9, 2026
Accra
Ghana
19:25
Wednesday, September 9, 2026
Addis Ababa
Ethiopia
22:25
Wednesday, September 9, 2026
Adelaide
Australia
04:55
Thursday, September 10, 2026
Algiers
Algeria
20:25
Wednesday, September 9, 2026
Almaty
Kazakhstan
00:25
Thursday, September 10, 2026
Amman
Jordan
22:25
Wednesday, September 9, 2026
Amsterdam
Netherlands
21:25
Wednesday, September 9, 2026
Anchorage
USA
11:25
Wednesday, September 9, 2026
Ankara
Turkey
22:25
Wednesday, September 9, 2026
Antananarivo
Madagascar
22:25
Wednesday, September 9, 2026
Asuncion
Paraguay
16:25
Wednesday, September 9, 2026
Athens
Greece
22:25
Wednesday, September 9, 2026
Auckland
New Zealand
07:25
Thursday, September 10, 2026
Baghdad
Iraq
22:25
Wednesday, September 9, 2026
Baku
Azerbaijan
23:25
Wednesday, September 9, 2026
Bangkok
Thailand
02:25
Thursday, September 10, 2026
Barcelona
Spain
21:25
Wednesday, September 9, 2026
Beijing
China
03:25
Thursday, September 10, 2026
Beirut
Lebanon
22:25
Wednesday, September 9, 2026
Belgrade
Serbia
21:25
Wednesday, September 9, 2026
Bengaluru
India
00:55
Thursday, September 10, 2026
Berlin
Germany
21:25
Wednesday, September 9, 2026
Bogota
Colombia
14:25
Wednesday, September 9, 2026
Brasilia
Brazil
16:25
Wednesday, September 9, 2026
Brisbane
Australia
05:25
Thursday, September 10, 2026
Brussels
Belgium
21:25
Wednesday, September 9, 2026
Bucharest
Romania
22:25
Wednesday, September 9, 2026
Budapest
Hungary
21:25
Wednesday, September 9, 2026
Buenos Aires
Argentina
16:25
Wednesday, September 9, 2026
Cairo
Egypt
22:25
Wednesday, September 9, 2026
Calgary
Canada
13:25
Wednesday, September 9, 2026
Cape Town
South Africa
21:25
Wednesday, September 9, 2026
Caracas
Venezuela
15:25
Wednesday, September 9, 2026
Casablanca
Morocco
20:25
Wednesday, September 9, 2026
Chicago
USA
14:25
Wednesday, September 9, 2026
Chongqing
China
03:25
Thursday, September 10, 2026
Copenhagen
Denmark
21:25
Wednesday, September 9, 2026
Dallas
USA
14:25
Wednesday, September 9, 2026
Dar es Salaam
Tanzania
22:25
Wednesday, September 9, 2026
Darwin
Australia
04:55
Thursday, September 10, 2026
Delhi
India
00:55
Thursday, September 10, 2026
Denver
USA
13:25
Wednesday, September 9, 2026
Dhaka
Bangladesh
01:25
Thursday, September 10, 2026
Doha
Qatar
22:25
Wednesday, September 9, 2026
Dubai
UAE
23:25
Wednesday, September 9, 2026
Dublin
Ireland
20:25
Wednesday, September 9, 2026
Edmonton
Canada
13:25
Wednesday, September 9, 2026
Frankfurt
Germany
21:25
Wednesday, September 9, 2026
Geneva
Switzerland
21:25
Wednesday, September 9, 2026
Guatemala City
Guatemala
13:25
Wednesday, September 9, 2026
Halifax
Canada
16:25
Wednesday, September 9, 2026
Hanoi
Vietnam
02:25
Thursday, September 10, 2026
Harare
Zimbabwe
21:25
Wednesday, September 9, 2026
Havana
Cuba
15:25
Wednesday, September 9, 2026
Helsinki
Finland
22:25
Wednesday, September 9, 2026
Ho Chi Minh City
Vietnam
02:25
Thursday, September 10, 2026
Hong Kong
Hong Kong
03:25
Thursday, September 10, 2026
Honolulu
USA
09:25
Wednesday, September 9, 2026
Houston
USA
14:25
Wednesday, September 9, 2026
Hyderabad
India
00:55
Thursday, September 10, 2026
Islamabad
Pakistan
00:25
Thursday, September 10, 2026
Istanbul
Turkey
22:25
Wednesday, September 9, 2026
Jakarta
Indonesia
02:25
Thursday, September 10, 2026
Jerusalem
Israel
22:25
Wednesday, September 9, 2026
Johannesburg
South Africa
21:25
Wednesday, September 9, 2026
Kabul
Afghanistan
23:55
Wednesday, September 9, 2026
Kampala
Uganda
22:25
Wednesday, September 9, 2026
Karachi
Pakistan
00:25
Thursday, September 10, 2026
Kathmandu
Nepal
01:10
Thursday, September 10, 2026
Khartoum
Sudan
21:25
Wednesday, September 9, 2026
Kiev
Ukraine
22:25
Wednesday, September 9, 2026
Kingston
Jamaica
14:25
Wednesday, September 9, 2026
Kinshasa
DR Congo
20:25
Wednesday, September 9, 2026
Kolkata
India
00:55
Thursday, September 10, 2026
Kuala Lumpur
Malaysia
03:25
Thursday, September 10, 2026
Kuwait City
Kuwait
22:25
Wednesday, September 9, 2026
La Paz
Bolivia
15:25
Wednesday, September 9, 2026
Lagos
Nigeria
20:25
Wednesday, September 9, 2026
Las Vegas
USA
12:25
Wednesday, September 9, 2026
Lima
Peru
14:25
Wednesday, September 9, 2026
Lisbon
Portugal
20:25
Wednesday, September 9, 2026
Los Angeles
USA
12:25
Wednesday, September 9, 2026
Luanda
Angola
20:25
Wednesday, September 9, 2026
Madrid
Spain
21:25
Wednesday, September 9, 2026
Manila
Philippines
03:25
Thursday, September 10, 2026
Melbourne
Australia
05:25
Thursday, September 10, 2026
Mexico City
Mexico
13:25
Wednesday, September 9, 2026
Milan
Italy
21:25
Wednesday, September 9, 2026
Minneapolis
USA
14:25
Wednesday, September 9, 2026
Minsk
Belarus
22:25
Wednesday, September 9, 2026
Montevideo
Uruguay
16:25
Wednesday, September 9, 2026
Montreal
Canada
15:25
Wednesday, September 9, 2026
Moscow
Russia
22:25
Wednesday, September 9, 2026
Mumbai
India
00:55
Thursday, September 10, 2026
Munich
Germany
21:25
Wednesday, September 9, 2026
Nairobi
Kenya
22:25
Wednesday, September 9, 2026
New Delhi
India
00:55
Thursday, September 10, 2026
New Orleans
USA
14:25
Wednesday, September 9, 2026
Oslo
Norway
21:25
Wednesday, September 9, 2026
Ottawa
Canada
15:25
Wednesday, September 9, 2026
Paris
France
21:25
Wednesday, September 9, 2026
Perth
Australia
03:25
Thursday, September 10, 2026
Phoenix
USA
12:25
Wednesday, September 9, 2026
Prague
Czech Republic
21:25
Wednesday, September 9, 2026
Reykjavik
Iceland
19:25
Wednesday, September 9, 2026
Rio de Janeiro
Brazil
16:25
Wednesday, September 9, 2026
Riyadh
Saudi Arabia
22:25
Wednesday, September 9, 2026
Rome
Italy
21:25
Wednesday, September 9, 2026
Salt Lake City
USA
13:25
Wednesday, September 9, 2026
San Francisco
USA
12:25
Wednesday, September 9, 2026
San Juan
Puerto Rico
15:25
Wednesday, September 9, 2026
Santiago
Chile
16:25
Wednesday, September 9, 2026
Santo Domingo
Dominican Republic
15:25
Wednesday, September 9, 2026
Sao Paulo
Brazil
16:25
Wednesday, September 9, 2026
Seattle
USA
12:25
Wednesday, September 9, 2026
Seoul
South Korea
04:25
Thursday, September 10, 2026
Shanghai
China
03:25
Thursday, September 10, 2026
Singapore
Singapore
03:25
Thursday, September 10, 2026
Sofia
Bulgaria
22:25
Wednesday, September 9, 2026
Stockholm
Sweden
21:25
Wednesday, September 9, 2026
Taipei
Taiwan
03:25
Thursday, September 10, 2026
Tallinn
Estonia
22:25
Wednesday, September 9, 2026
Tashkent
Uzbekistan
00:25
Thursday, September 10, 2026
Tehran
Iran
22:55
Wednesday, September 9, 2026
Tel Aviv
Israel
22:25
Wednesday, September 9, 2026
Toronto
Canada
15:25
Wednesday, September 9, 2026
Tunis
Tunisia
20:25
Wednesday, September 9, 2026
Vancouver
Canada
12:25
Wednesday, September 9, 2026
Vienna
Austria
21:25
Wednesday, September 9, 2026
Warsaw
Poland
21:25
Wednesday, September 9, 2026
Wellington
New Zealand
07:25
Thursday, September 10, 2026
Yangon
Myanmar
01:55
Thursday, September 10, 2026
Zurich
Switzerland
21:25
Wednesday, September 9, 2026
How to Use the Global World Clock
Follow these simple steps to calculate your exact result in seconds.
Search or Select Cities
Choose from major global financial and cultural hubs (New York, London, Tokyo, Sydney, Paris, San Francisco).
Compare Clocks Side-by-Side
View live synchronized digital clocks showing current local time, date, and UTC offset.
Use Timezone Slider
Drag the hour slider to see what time a proposed meeting will be across every selected city simultaneously.
Identify Business Hours Overlap
Color-coded indicators highlight typical 9:00 AM - 5:00 PM business working hours in green.
How the Calculation Works
Understand the underlying formula and arithmetic logic.
Core Formula
Target City Time = UTC Time ± City IANA Timezone Offset (accounting for current Daylight Saving Time)
The tool uses standardized IANA timezone identifiers (e.g. America/New_York, Europe/London, Asia/Tokyo) via the Intl.DateTimeFormat API. This ensures automatic adjustment for local Daylight Saving Time transitions without manual offset calculations.
Edge Cases and Special Rules Handled
Daylight Saving Time Transition Weeks
The United States switches to DST on the second Sunday in March, while Europe switches on the last Sunday in March. For two to three weeks every spring and autumn, the transatlantic time difference shifts by one hour!
Half-Hour and 45-Minute Time Zones
Not all time zones are full hours. India (IST) is UTC+5:30, Nepal is UTC+5:45, and Adelaide/Darwin in Australia are UTC+9:30.
Real-World Examples & Calculations
See step-by-step walkthroughs of common situations.
Global Engineering Standup (SF, London, Tokyo)
Context: An engineering manager in San Francisco needs to schedule a 30-minute sync with engineers in London and Tokyo.
Calculation: SF: 4:00 PM (business day ending) → London: 12:00 AM midnight (impractical) → Tokyo: 9:00 AM next morning (start of business day).
London to New York Financial Market Opening
Context: A UK trader wants to know what time the New York Stock Exchange opens in London local time.
Calculation: New York (UTC-5) to London (UTC+0) = +5 hours difference.
Comprehensive Guide: Practical Concepts & Deep Dive
Topical insights, industry conventions, and real-life guidelines.
The Origin of Standard Time and Time Zones
Before the mid-19th century, every city and town set its clocks according to the sun (solar noon was when the sun was highest in the local sky). Because cities situated just 50 miles apart had different local times, train schedules were chaotic and hazardous.
In November 1883, North American railroad companies established standard railroad time zones. The International Meridian Conference in Washington, D.C. in 1884 officially adopted Greenwich, England as the Prime Meridian (0° longitude) and divided the globe into 24 standard one-hour longitudinal time zones.
Common Mistakes to Avoid
Avoid these frequent calculation pitfalls that lead to errors.
✕Assuming time differences remain constant year-round
Why it happens: Because countries change to Daylight Saving Time on different calendar dates, time differences fluctuate by an hour in spring and autumn.
✓Solution: Use our IANA-backed world clock, which updates offsets dynamically in real time.
Major Global Financial Hub Timezone Offsets
Standard and daylight time offsets for major world cities.
| City / Region | Standard Timezone | Standard Offset (Winter) | Daylight Offset (Summer) |
|---|---|---|---|
| London, UK | GMT / BST | UTC+0 | UTC+1 |
| New York, USA | EST / EDT | UTC-5 | UTC-4 |
| San Francisco, USA | PST / PDT | UTC-8 | UTC-7 |
| Tokyo, Japan | JST | UTC+9 (No DST) | UTC+9 (No DST) |
| Sydney, Australia | AEST / AEDT | UTC+10 | UTC+11 (Opposite Season) |
| Singapore | SGT | UTC+8 (No DST) | UTC+8 (No DST) |
| Dubai, UAE | GST | UTC+4 (No DST) | UTC+4 (No DST) |
| Mumbai, India | IST | UTC+5:30 (No DST) | UTC+5:30 (No DST) |
Comparison vs Alternative Calculation Methods
Why dedicated online calculation saves time and prevents errors.
Interactive timezone sliders eliminate the mental confusion of crossing the International Date Line.
| Method | Speed | Accuracy | Convenience | Practical Notes |
|---|---|---|---|---|
TimeCalculatorHub World Clock | Instant | 100% exact IANA timezone database | Interactive meeting hour slider | Highlights working business hours overlap |
Mental Offset Arithmetic | Moderate | Prone to errors during DST shift weeks | Requires knowing exact UTC offsets | Frequently confuses + vs - direction across date line |
Static Timezone Table | Slow | Often outdated after DST rules change | Static chart | Cannot slide hours interactively |
TimeCalculatorHub World Clock
Mental Offset Arithmetic
Static Timezone Table
Practical Tips for the Global World Clock
Expert advice and helpful shortcuts tailored to this tool.
Watch for the 2-3 Week Spring DST Gap
The US and UK change clocks on different weekends in March and October, altering the London-New York time gap from 5 hours to 4 hours for several weeks.
Check the Date Label Carefully
When scheduling across the Pacific Ocean (e.g. US to Australia or Japan), the target city is almost always on the NEXT calendar day.
Frequently Asked Questions
Clear, honest answers to common questions about this calculator.