World Clock
What is a World Clock?
Display real-time live digital clocks across major world cities (New York, London, Tokyo, Paris, Sydney, Dubai, Mumbai). Customize your personal city clock dashboard with 12/24 hour toggles.
Why Use This Tool?
- Remote Work & Global Teams: Keep track of live current local time for overseas clients and remote colleagues.
- Financial Markets: Monitor stock exchange opening hours across New York (NYSE), London (LSE), and Tokyo (TSE).
- Travel Dashboard: View live times at your destination before calling international contacts.
How to Use
- Search and add cities to your personal World Clock dashboard.
- Toggle 12-Hour (AM/PM) or 24-Hour digital format.
- Watch live second-by-second clock updates.
Real Working Example
Input:
Cities: New York, London, Tokyo, Sydney
Output Result:
New York: 09:15:30 AM | London: 02:15:30 PM | Tokyo: 11:15:30 PM | Sydney: 01:15:30 AM (+1d)
Important Technical Details & Formulas
- Browser Native Clock Tick: Ticks second-by-second using JavaScript `requestAnimationFrame` for minimal CPU usage.
- LocalStorage Persistence: Selected city clocks persist automatically across browser visits.
- 100% Client-Side Engine: Fast, offline-capable live clock updates.
Related Measurement & Time Tools
- Timezone Converter: Convert times between zones.
- Meeting Timezone Planner: Find overlapping work hours.
- Countdown Timer: Count down to target dates.
Frequently Asked Questions
Can I add custom cities to my world clock dashboard?
Yes, search and add any major city or IANA time zone.
Are my selected cities saved for next time?
Yes, city preferences save automatically to your browser local storage.
Is it free?
Yes, 100% free.
Does it support 24-hour military time format?
Yes, toggle between 12-hour AM/PM and 24-hour digital clock formats.
What is the main function of World Clock?
View real-time live clocks across major global cities and time zones with digital, 12/24 hour, and city search filters. This tool processes world clock data 100% locally inside your web browser.