World Time at Your Fingertips
An online world clock that displays the current time in 70+ major cities worldwide in real-time. With an elegant digital segment design, check time at a glance and compare time zones across cities. Perfect for international meetings, overseas trading, travel planning, ticketing, and any situation requiring precise timing.
- View current time in 70+ major cities worldwide
- Automatically calculates and displays time differences between cities
- Freely reorder clocks with drag and drop
- Second-accurate real-time display - for precise time verification
- Dark/Light mode toggle to reduce eye strain
- Adjust font size for better readability
- Fullscreen mode for better focus
- Ideal for important exams like SAT, civil service tests
World Time at a Glance
Check the current time in major financial hubs and IT centers worldwide including Seoul, Tokyo, Beijing, New York, London, and Paris. Useful for business trips, international meetings, and calculating time differences for overseas transactions. Drag and drop to arrange your frequently checked cities in your preferred order.
How to Use
Check Current Time
Upon loading, the precise current time is displayed to the second in a digital segment display.
Add World Cities
Tap the '+' button to search and add cities. Over 70 major cities worldwide are supported.
Reorder & Set Main
Drag and drop to reorder clocks, and tap the star icon to set any city as the main clock.
Theme & Fullscreen
Switch between dark/light modes, and use the fullscreen button for an immersive experience.
Use Cases
International Stock & Crypto Trading
Check opening and closing times for NYSE, TSE, LSE, and other exchanges in real-time.
International Video Conferences
Instantly see current time and time differences across cities when meeting with global teams.
Travel Time Zone Management
Check your destination's current time before traveling. Calculate flight boarding and hotel check-in times.
Concert & Event Ticketing
Start booking at the exact moment with second-accurate real-time display. Essential for high-demand ticket sales!
Exams & Certifications
Manage time precisely to the second just like a real exam. Perfect for practice test simulations.
Deadline Management
Precisely manage second-critical deadlines for project submissions, bids, and event entries.
Supported Cities Guide
Check the time in over 70 major cities worldwide. Tap the '+' button to search and add any city you need.
🌏 Asia & Oceania
Seoul, Tokyo, Beijing, Shanghai, Hong Kong, Singapore, Bangkok, Jakarta, Mumbai, Dubai, Sydney, Auckland, etc.
🌍 Europe
London, Paris, Berlin, Amsterdam, Rome, Madrid, Moscow, Istanbul, Zurich, Stockholm, etc.
🌎 Americas
New York, Los Angeles, Chicago, Toronto, Mexico City, São Paulo, Buenos Aires, Vancouver, etc.
🌍 Africa & Middle East
Cairo, Johannesburg, Nairobi, Lagos, Casablanca, etc.
Frequently Asked Questions (FAQ)
Which cities can I check the time for?
You can check the current time in 70+ major cities worldwide including Seoul, Tokyo, New York, London, Paris, and Sydney. Search and add any city you need.
How many world cities can I add?
We support over 70 major cities, and you can add as many as you want and reorder them with drag and drop. Place your frequently checked cities at the top.
Is the time accurate? Could it differ from my computer clock?
This clock uses your device's system time. Most devices automatically sync with internet time servers, providing high accuracy. If you need even more precise server time, please use our dedicated 'Server Time' tool.
Are my settings saved?
Yes, all settings including theme, added cities, and city order are automatically saved in your browser. You can use the same setup on your next visit.
Can I use it on mobile?
Yes, with responsive design, it works optimally on all devices including PCs, tablets, and smartphones. Fullscreen mode is also supported.
Can I use this clock for ticketing?
Yes, this online clock displays time accurately to the second. You can start booking at the exact time for concerts, musicals, sports events, and more.
Does the clock work without internet?
After the initial load, time is calculated within your browser, so the clock works even without internet. However, some features like adding world cities require an internet connection.
Understanding Time Zones (UTC)
Major offsets include UTC+9 (Seoul, Tokyo), UTC+8 (Beijing, Singapore), UTC+5:30 (Mumbai), UTC+1 (Paris, Berlin), UTC-5 (New York), and UTC-8 (Los Angeles). Some regions use half-hour or 45-minute offsets — Nepal is UTC+5:45, and parts of Australia use UTC+9:30.
Daylight Saving Time (DST) shifts clocks forward by one hour during warmer months in many countries. The US, Canada, and most of Europe observe DST, while Japan, South Korea, and China do not. DST transitions typically occur in March and November, meaning time differences between cities can change twice a year.
The History of Timekeeping
Water clocks (clepsydra) emerged in Greece and China, enabling time measurement at night and on cloudy days. Mechanical clocks appeared in European monasteries during the 13th century, and the pendulum clock, invented by Christiaan Huygens in 1656, brought accuracy within seconds per day.
The quartz crystal oscillator, developed in 1927, revolutionized precision by vibrating at 32,768 Hz. Today's cesium atomic clocks define one second as 9,192,631,770 oscillations of a cesium-133 atom, achieving accuracy to within one second over 300 million years. Optical lattice clocks now push that even further, losing less than a second over the age of the universe.
Privacy Notice
World clock data is processed in your browser and is not transmitted to any server. All user settings including added cities and theme preferences are stored only in the browser's local storage.