World Clock
View current time across multiple timezones
Added cities will appear below.
This world clock shows the current local time in as many cities as you need, side by side on one screen. Search for a city, add it, and every clock updates live. It is built for remote teams, frequent travelers, and anyone who keeps asking what time it is over there.
How Time Zones Work
Every time zone is an offset from Coordinated Universal Time (UTC). New York is UTC-5 in winter, Tokyo is UTC+9, and Nepal uses an unusual UTC+5:45. Many countries also shift their clocks for Daylight Saving Time — on different dates — so the gap between two cities can change twice a year. This tool relies on the IANA timezone database, the same registry your operating system uses, which tracks offsets and historical DST rules for every region on Earth.
How to Use
- Type a city name in the search box and pick it from the suggestions.
- The city appears as a live clock card with time, date, and UTC offset.
- Click “Add my time” to pin your own timezone for comparison.
- Use the toggle to switch between 12-hour and 24-hour display.
Each card flags whether DST is in effect, so a seasonal shift never catches you out.
Features
- Unlimited city clocks in a responsive grid
- Live time with date and UTC offset per card
- City search with autocomplete
- One-click “add my local time” button
- 12-hour / 24-hour display toggle
- DST indicator for every timezone
Use Cases
Distributed teams find overlap hours before scheduling across San Francisco, London, and Singapore. Travelers check whether it is a reasonable hour to call home, event organizers publish times an international audience can decode, and gamers coordinate raid times with guildmates on other continents.
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Frequently Asked Questions
How accurate is the World Clock?
The World Clock uses your device's system time and JavaScript's Internationalization API to calculate accurate local times for each timezone. It accounts for standard timezone offsets but may not reflect real-time DST transitions for all regions perfectly.
Does it account for Daylight Saving Time?
Yes, the tool uses the browser's built-in Intl.DateTimeFormat API, which accounts for DST based on the IANA timezone database. Each clock card indicates whether DST is currently active for that timezone.
How many cities can I add?
There is no limit. You can add as many cities as you need. Each city appears as a clock card in a responsive grid that adapts from single-column on mobile to two columns on desktop.