UTC (Coordinated Universal Time) is the primary time standard used worldwide. It is not adjusted for daylight saving time. All other time zones are defined by their offset from UTC — for example, EST is UTC-5 and IST is UTC+5:30.

World Clock

Q: How do I add a new city to the world clock?

Select a timezone from the dropdown menu at the top of the clock grid. You can choose from all IANA standard timezones. A new clock card for that timezone will be added to the grid instantly.

Q: What do the sun and moon icons mean?

Each city card shows a sun icon during daytime hours (6am to 8pm local time) and a moon icon during nighttime hours. The card also changes to a darker theme at night for visual clarity.

See the current time in cities across the globe. Add any timezone, compare times side by side, and track day and night at a glance.

🌐 UTC —

What Is an Online World Clock?

An online world clock displays the current local time in multiple cities and time zones simultaneously, updating in real time. Unlike a simple clock app, a world clock lets you compare times across countries at a glance — essential for remote teams, international business, travel planning, and keeping in touch with friends and family worldwide.

Our world clock uses the IANA Time Zone Database (the most comprehensive and accurate timezone data available), so every clock automatically adjusts for daylight saving time (DST). No manual updates needed.

World Time Zone Reference

Region	Timezone	UTC Offset
New York, USA	America/New_York	UTC−5 / UTC−4 (DST)
Los Angeles, USA	America/Los_Angeles	UTC−8 / UTC−7 (DST)
London, UK	Europe/London	UTC+0 / UTC+1 (BST)
Paris, France	Europe/Paris	UTC+1 / UTC+2 (CEST)
Dubai, UAE	Asia/Dubai	UTC+4 (no DST)
Mumbai, India	Asia/Kolkata	UTC+5:30 (no DST)
Singapore	Asia/Singapore	UTC+8 (no DST)
Tokyo, Japan	Asia/Tokyo	UTC+9 (no DST)
Sydney, Australia	Australia/Sydney	UTC+10 / UTC+11 (AEDT)

Frequently Asked Questions

How do I add a new city to the world clock?

Select a timezone from the dropdown at the top and click "Add Clock." A new card for that timezone will be added instantly and starts updating in real time.

Does the world clock account for daylight saving time?

Yes. The world clock uses the JavaScript Intl.DateTimeFormat API with IANA timezone identifiers, which automatically adjusts for daylight saving time in all regions that observe it.

What do the sun and moon icons mean?

Each city card shows a sun icon during daytime hours (6am–8pm local time) and a moon icon with a darker card background at night, giving you an instant visual indicator of whether the location is currently in day or night.

Can I remove a city?

Yes. Click the × button on any city card to remove it from the display. Your remaining clocks continue updating every second in real time.

What is UTC time?

UTC (Coordinated Universal Time) is the global time standard that all other time zones are measured against. It never changes for daylight saving time. The UTC bar at the top of the page always shows the current UTC time for easy reference.

Why is my local time wrong?

The world clock reads time directly from your device. If your local time appears incorrect, check your device clock and ensure the correct timezone is set in your operating system settings.