How many cities can I add to the world clock?

There is no hard limit. You can add as many cities as you need. The display is scrollable, so even large lists of cities are manageable.

Does the world clock handle daylight saving time?

Yes. Each clock uses the IANA timezone database, which automatically applies DST transitions. When a city switches between standard time and daylight saving time, the clock adjusts without any action on your part.

Will my city selection be saved?

Yes. Your city list is saved in your browser's local storage. When you return to the world clock, your previously selected cities will be displayed automatically. Clearing your browser data will reset the selection.

How do I know if it's a good time to contact someone?

Cities within business hours (9 AM–6 PM local time) are highlighted visually. This gives you a quick indication of whether a colleague or client is likely to be available, without needing to calculate the time difference.

Can I share my world clock configuration?

The current version stores your configuration locally. To share a specific set of cities, you can tell others to add the same cities from the search interface.

Loading tool...

World Clock

A world clock displays the current time in multiple cities and time zones simultaneously on a single page. It updates every second, highlights business hours, and shows when the local date differs from yours, making it essential for cross-timezone coordination.

100% FreeNo Signup RequiredBrowser-BasedPrivate & Secure

What is World Clock?

A world clock is an online utility that displays the current time across multiple time zones simultaneously, using the IANA timezone database for DST-accurate results and highlighting business hours for each city.

Complementary Tools

These tools work great alongside World Clock:

Countdown Timer Timezone Converter

Start Using World Clock Today

Managing a distributed team across time zones requires constant awareness of what time it is everywhere that matters. The world clock puts all those clocks on one page, updating every second, with business hours highlighted so you know at a glance who's available. Add your cities once, and the tool remembers them for your next visit.

Use World Clock Free

Table of Contents