Chrome's own New Tab page has shortcuts, a theme, and a search box, but no clock. This puts the time in every city you work with on each Chrome new tab, as analog faces or a digital readout.
The Chrome-specific flow, start to finish.
A short tour of the widget. Already sold? Skip ahead.
Chrome ships its own copy of the IANA time zone database inside the browser and refreshes it with each Chrome release. The widget hands every clock's zone to that database, so daylight saving switches and one-off rule changes, such as a country dropping DST, show up correctly as long as Chrome is current. If a single clock is suddenly an hour off while the others are right, check chrome://settings/help for a pending update before anything else.
The "auto" time format uses the default of the language Chrome itself runs in, so a Chrome running in English (United States) shows 12-hour clocks even on a machine in Germany. Pick 24-hour in the widget settings if that is not what you want. Clocks are stored on your Start Page HQ account rather than in the Chrome profile, so a work profile and a personal profile can show different city lists by signing into different accounts, or the same list by signing into one.

Pair the World Clock widget with these. One install gets you all of them.

Your own local time and date, large, above the world clocks.

The forecast for the same cities, so you know if the call is from a heatwave.

Today's meetings, next to the clocks that tell you if they're at a sane hour for everyone.

A launch or deadline in one time zone, counting down for all.

A month view for planning trips across those time zones.

For the invoices that come with the international team.
The World Clock widget is one of 50+ in Start Page HQ. Tasks, notes, RSS, AI tools, dev utilities — the same install gives you all of them. Start free with 8 widgets on a page, or lift every limit at $4/month, $24/year, or $48 lifetime.
Not inside Chrome's own New Tab page. The Customize Chrome panel controls the background, shortcuts, and color, and has no clock or widget option. Start Page HQ replaces the new tab with a dashboard, and the World Clock is one widget on it.
The widget relies on Chrome's built-in time zone data. A clock that is off by exactly one hour after a rule change usually means Chrome is out of date. Updating Chrome from chrome://settings/help fixes it, because the time zone database ships with the browser.
Yes. Sign into the same Start Page HQ account and the clocks, labels, and order appear on that Chrome too. It does not depend on Chrome sync or on which Google account the Chrome profile uses.
Chrome on Android does not run extensions, so the new tab cannot be replaced there. Open startpagehq.com in Chrome on the phone and sign in. The hosted dashboard shows the same clocks.
Free plan, no credit card — see plans or try the demo without installing.