How to show a world clock with multiple time zones on Windows
Short answer
Windows can add two extra clocks for other time zones, shown when you hover over or click the taskbar clock, and the Clock app has a World clock page for more cities. To keep many time zones on screen at once, use a desktop world clock. AppRig shows a grid of city clocks with day or night shading, time offsets and sunrise and sunset times.
The manual way
Windows has two built-in options. The first is additional clocks: open Settings > Time & language > Date & time and choose “Additional clocks” (or, in Control Panel, Clock and Region > “Add clocks for different time zones”). Tick “Show this clock”, pick a time zone and name it. You can add up to two, and they appear when you hover over or click the clock on the taskbar.
The second is the Clock app’s World clock page, where you can add as many cities as you like and see how far ahead or behind each one is. The catch is that you have to open the app to look, and the taskbar only ever shows two extra zones.
The faster way with AppRig
AppRig’s Clock tool puts a world clock right in its window. Switch to World clock for a grid of cities, each shown as its own digital or analog clock with a warm tint in daytime and a cool one at night, or to List view to fit many more cities as compact rows. Add places from a built-in search of around 1,000 cities and drag them into the order you want.
Right-click a clock to add extra detail: a big “+5h ahead” offset, a sunrise-to-sunset arc, or a 24-hour day strip showing where “now” sits. Sunrise and sunset are worked out on your PC with no network request. The same tool also shows a large clock for your own location and hosts AppRig’s countdown timers.
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Common questions
How do I add a second clock to the Windows taskbar?
Open Settings > Time & language > Date & time and choose "Additional clocks" (or, in Control Panel, Clock and Region > "Add clocks for different time zones"). On the Additional Clocks tab, tick "Show this clock", pick a time zone and give it a name. You can add up to two. They appear when you hover over or click the clock on the taskbar.
Can Windows show more than two extra time zones?
Not in the taskbar clock, which is limited to two additional clocks. The Clock app's World clock page can hold many more cities, but you have to open the app to see them. For more than two zones always in view, you need a separate desktop clock or world clock tool.
How do I quickly work out the time difference with another city?
The Windows Clock app's World clock page shows each city's time and how far ahead or behind your own time it is. When scheduling a meeting, also check daylight saving time, because many regions change their clocks on different dates and the gap between two cities can shift by an hour for a few weeks each year.
Related questions
AppRig does this and more, all in one local-first Windows app. See what AppRig does →