How do I add a city to the world clock?

Click the "Add Zone" button at the top, then start typing a city name or time zone abbreviation. The search filters as you type — pick from the results and the clock appears immediately. You can add up to 8 zones at once.

What does the business hours indicator mean?

Each clock card shows a colored dot next to the time. Green means it is currently within standard business hours (9 AM to 5 PM) in that zone. Orange means it is early morning or evening (near business hours). Red means it is outside business hours entirely. It is a quick way to know whether it is a reasonable time to call or message someone in that city.

Does the world clock update automatically?

Yes. Every clock updates every second in real time. You do not need to refresh the page — the times stay current as long as the tab is open.

Does it save my cities when I leave the page?

Yes. Your selected cities are saved to your browser's localStorage. When you come back, the same zones are loaded automatically. You can remove any zone by clicking its remove button, and the change is saved immediately.

Are there keyboard shortcuts?

Yes. Press A to open the zone search, Escape to close it, and Delete or Backspace to remove the currently focused zone. Press F to toggle fullscreen mode. Use the left and right arrow keys to move the time slider when it is focused.

What time is it in Tokyo right now?

Add Tokyo to the world clock and you will see the current time displayed live, along with the date and a business hours indicator. The clock updates every second so the time is always accurate to your device's system clock.

Free World Clock Online

See the current time in any city, instantly

Lost in Japan →

What the World Clock Does

Coordinating across time zones is one of those problems that sounds simple until you actually have to do it. You need to schedule a standup with teammates in Berlin, Sao Paulo, and Singapore. You want to call family overseas without waking them at 3 AM. You are trying to figure out whether a conference keynote at 10 AM Pacific means you need to set an alarm or just open your laptop after lunch. A world clock puts all of those answers on a single screen.

This tool lets you track up to 8 cities simultaneously, each with a live-updating clock, a date display, and a business hours indicator that tells you at a glance whether it is a reasonable time to reach out. There is also a time slider for comparing zones at different hours and a click-to-edit feature for setting a specific time and seeing what that moment looks like everywhere else. No app to install, no account to create, no data collected. Everything runs 100% client-side in your browser — your selected cities are saved to localStorage on your device and never transmitted anywhere.

How It Works

When you first open the tool, your local time zone loads automatically based on your browser settings. From there, building your dashboard takes just a few steps.

Adding cities. Type a city name or time zone into the search field at the top of the tool. The dropdown filters results as you type, showing matching cities alongside their IANA time zone identifiers. Click a result (or press Enter to select the first match) and a new clock card appears on your dashboard. You can add up to 8 zones total.

Reading the cards. Each zone card displays the city name, the current time (updating every second), the date, and a UTC offset badge. A colored business hours label sits next to the city name: green for standard working hours (9 AM to 5 PM), amber for the fringes of the day (early morning or early evening), and a muted label for nighttime. If a zone is on a different calendar day than your first zone, a Tomorrow or Yesterday badge appears automatically.

Analog and digital views. By default, each card shows an analog clock face with hour, minute, and second hands, plus a digital readout beneath it. Toggle the clock icon button (or press C) to switch to a clean digital-only layout. Use the 12h / 24h toggle to switch between time formats — both the digital display and the click-to-edit inputs update accordingly.

Comparing times with the slider. Drag the time slider left or right to shift all clocks in unison by up to 12 hours in either direction, in 15-minute increments. The offset label next to the slider shows how far you have shifted from the current time. Click Reset (or press R) to snap back to the present.

Editing a specific time. Click any digital time display to enter edit mode. Type the hour and minute you want, toggle AM/PM if you are in 12-hour mode, and press Enter or click the checkmark. Every other zone recalculates to show the corresponding time at that moment — an efficient way to answer questions like “what time will it be in Tokyo when it is 9 AM here?”

Reordering and removing. Use the arrow buttons beneath each card to rearrange your zones. Click the X button on any card to remove it. All changes are saved to localStorage immediately, so your dashboard will look exactly the same the next time you visit.

Fullscreen mode. Click the fullscreen button in the top-right corner (or press F) to expand the tool into a dedicated full-screen view — useful for keeping the world clock visible on a second monitor.

Why Use Our World Clock

Most free world clock tools limit you to a handful of zones, bury the interface under banner ads, or require you to create an account before you can save anything. Desktop widgets consume system resources in the background. This tool avoids all of that.

No limits, no sign-up. Track up to 8 zones simultaneously without creating an account or providing an email address. Your cities are stored in your browser’s localStorage — nothing is sent to a server.

Business hours at a glance. The colored status labels eliminate the mental math of converting offsets into “is this person awake?” You can scan your entire dashboard in a second and know which colleagues are available.

Time slider for planning. Instead of manually calculating what 3 PM your time means in four other cities, drag the slider and watch every clock shift together. It is the fastest way to find overlapping work hours across distributed teams.

Click-to-edit precision. Set any zone to a specific time, and every other card instantly shows the corresponding moment. No separate converter tool needed.

Privacy by design. The tool runs entirely in your browser. There is no server-side processing, no analytics tracking which cities you monitor, and no cookies beyond your localStorage preferences.

Use Cases

Remote team coordination — Pin your teammates’ time zones and check the dashboard before scheduling a meeting or sending a message. The business hours labels tell you immediately whether your “quick question” is going to be a midnight interruption.
International calls and family check-ins — Add your family’s city and glance at the status label before dialing. Green means go. Red means you should probably wait until morning.
Travel planning — Display your home zone alongside your destination to plan departure times, arrival schedules, and jet lag adjustments without confusing AM and PM across the date line.
Global event tracking — Conferences, product launches, live streams, and sports events often list times in a single zone. Add that zone to your dashboard and see exactly when the event starts in your local time.
Freelancers managing international clients — Keep your clients’ zones visible so you can time deliverables, invoice submissions, and status updates to land during their working hours rather than yours.
Scheduling across three or more zones — Use the time slider to scan forward through the next 12 hours and find the window where the maximum number of zones show green business hours labels simultaneously. That is your meeting slot.

Tips and Best Practices

Use the slider to find meeting windows. Drag it forward to the next morning and look for the point where the most zones display green business hours labels at the same time. The 15-minute step size matches standard calendar slots.
Click-to-edit beats mental math. If someone says “let us meet at 2 PM London time,” click London’s time display, type 2:00 PM, and instantly read every other zone’s corresponding time.
Toggle analog clocks off for a compact view. Press C to hide the clock faces and show only digital times. This is especially useful on smaller screens or when you have all 8 zones loaded and want to see them without scrolling.
Use fullscreen as a desk dashboard. Press F to go fullscreen and leave the tool running on a secondary monitor. The clocks update every second, so it works as a persistent reference throughout your workday.
Remember that the slider resets on reload. It is designed for quick comparisons, not permanent offsets. Your saved zones and display preferences (12h/24h, analog on/off) persist across sessions, but the time slider always starts at “now” when you reopen the page.

Frequently Asked Questions

How do I add a city to the world clock?: Click the "Add Zone" button at the top, then start typing a city name or time zone abbreviation. The search filters as you type — pick from the results and the clock appears immediately. You can add up to 8 zones at once.
What does the business hours indicator mean?: Each clock card shows a colored dot next to the time. Green means it is currently within standard business hours (9 AM to 5 PM) in that zone. Orange means it is early morning or evening (near business hours). Red means it is outside business hours entirely. It is a quick way to know whether it is a reasonable time to call or message someone in that city.
Does the world clock update automatically?: Yes. Every clock updates every second in real time. You do not need to refresh the page — the times stay current as long as the tab is open.
Does it save my cities when I leave the page?: Yes. Your selected cities are saved to your browser's localStorage. When you come back, the same zones are loaded automatically. You can remove any zone by clicking its remove button, and the change is saved immediately.
Are there keyboard shortcuts?: Yes. Press A to open the zone search, Escape to close it, and Delete or Backspace to remove the currently focused zone. Press F to toggle fullscreen mode. Use the left and right arrow keys to move the time slider when it is focused.
What time is it in Tokyo right now?: Add Tokyo to the world clock and you will see the current time displayed live, along with the date and a business hours indicator. The clock updates every second so the time is always accurate to your device's system clock.