QUICK ADD:
No clocks added yet
Search for a city above or click a quick preset to get started// track time across every timezone at once
Display live clocks for any combination of world cities. Add timezones, compare times across regions, and track international meetings in real time.
No clocks added yet
Search for a city above or click a quick preset to get startedType a city name or timezone in the search bar and select from the suggestions.
Click any Quick Add chip to instantly add a major world city clock.
All clocks update every second. Remove any clock with the × button.
The World Clock tool lets you display live, real-time clocks for any combination of cities around the globe. Add as many timezones as you need, compare hours side-by-side, and instantly copy all current times for sharing in emails or documents.
The clocks use your browser's built-in JavaScript Date API and the IANA timezone database. They are accurate to the second, updating every 1000ms. Accuracy depends on your device's system clock.
Yes — search for a city in that timezone (e.g. "Mumbai" for UTC+5:30) and it will resolve to the correct IANA timezone, including DST awareness.
Absolutely. The tool uses named IANA timezones (e.g. America/New_York) rather than fixed UTC offsets, so DST transitions are handled automatically.
Yes — your selected cities are saved to localStorage in your browser. They will be restored automatically the next time you visit the page.
There is no hard limit. You can add as many timezones as you need. The grid layout adjusts responsively to accommodate all your clocks.
It copies a formatted plain-text list of all current clock readings — city name, local time, and UTC offset — ready to paste into an email, Slack message, or document.
A world clock is a tool that displays the current local time in multiple cities or time zones simultaneously. Unlike a simple timezone converter that transforms a single time value, a live world clock runs continuously — updating every second — giving you an at-a-glance view of what time it is right now across the globe.
This tool is especially useful for anyone who regularly works across international borders: remote teams with members in different countries, project managers coordinating deliveries, developers monitoring distributed systems, or travelers planning itineraries across multiple destinations.
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The world is divided into 24 primary time zones, each offset from Coordinated Universal Time (UTC) by a whole or half hour. UTC itself is based on atomic time and does not change with the seasons. Many countries observe Daylight Saving Time (DST), advancing their clocks by one hour in summer to make better use of daylight — which means the offset from UTC changes twice a year for those regions.
IANA maintains the official timezone database (often called the "tz database" or "Olson database"), which tracks every named timezone and its historical DST rules. Modern browsers use this database internally, which is why this tool can correctly show times for cities like "America/Chicago" rather than relying on a fixed UTC-6 offset that would be wrong during summer.
The most effective way to use a world clock is to add your home city first, then add every other city you need to track. The clocks update in sync, making it easy to answer questions like "If it's 2pm here, what time is the meeting in Singapore?" without any manual arithmetic. The UTC offset badge on each clock gives you an instant numerical reference to the difference.
When scheduling international meetings, look for the overlap window where all participants are within standard business hours (roughly 9am–6pm local). With clocks displayed side by side, this window becomes visually obvious — no spreadsheet required.
You may encounter these abbreviations when working with international times:
It might seem simpler to work with UTC offsets like "UTC+1" instead of timezone names like "Europe/Berlin." But fixed offsets break twice a year wherever DST is observed. A meeting scheduled at "UTC+1" would land one hour early or late for European colleagues when they switch clocks. Named timezones carry all the DST rules with them, so the calculation stays correct year-round automatically.
Remote teams: Pin your teammates' cities and glance at the board before sending a Slack message — no more accidentally pinging someone at 3am. Most distributed companies maintain a Notion page or Slack canvas of team timezones; a live clock board is the interactive equivalent.
Financial traders: Global markets open and close at fixed local times. The New York Stock Exchange opens at 9:30am ET, the London Stock Exchange at 8:00am GMT, and the Tokyo Stock Exchange at 9:00am JST. Tracking these opens simultaneously helps traders anticipate volatility windows.
System administrators: Maintenance windows, deployment freezes, and on-call rotations are often defined in UTC. A world clock pinned to UTC alongside your local time eliminates off-by-one errors in runbooks.
Content creators and streamers: Announcing a live event? Listing the time in three or four major timezones in your announcement prevents audience confusion and increases attendance from international viewers.
When no single time works for everyone, aim for the edge of the business day — early morning US West Coast often overlaps with late afternoon Europe and early morning Asia in a three-way call. Tools like this world clock make it easy to sweep through candidate times and find a slot that avoids anyone being asked to join before 8am or after 8pm.
Always state meeting times in UTC when sending calendar invites to international participants — most calendar applications will automatically convert UTC to each attendee's local time, preventing confusion.