World Clock — View Time Zones & Multiple Cities Online
View current time in multiple cities simultaneously. Features real-time updates, DST detection, 12/24 hour toggle, and quick city search.
Features
- ✓View current time in 100+ major cities worldwide organized by region
- ✓Real-time clock updates every second with automatic synchronization
- ✓Cities grouped by geographic regions: Asia, Europe, Africa, Americas, Oceania
- ✓Time zone comparison showing UTC offset for each city
- ✓Daylight saving time (DST) detection and automatic adjustment
- ✓12/24 hour format toggle for different display preferences
- ✓Sorted by time zone within each region for easy comparison
- ✓Quick visual scan of global working hours across all major business hubs
- ✓Perfect for remote teams coordinating across continents
- ✓No server dependency — all timekeeping uses your device's system clock
How to Use
- 1Cities are automatically displayed grouped by geographic region.
- 2Toggle between 12-hour and 24-hour format using the button in the top right.
- 3Compare times across cities in the same region to find overlapping working hours.
- 4DST indicator shows when daylight saving time is active.
- 5Use the regional grouping to quickly assess time differences between business hubs like New York, London, and Tokyo.
- 6Check the UTC offset column to understand each city's time zone relative to your own.
- 7Plan international calls by finding hours when two regions overlap during standard business times (9 AM-5 PM).
- 8Monitor multiple time zones at once — ideal for remote teams distributed across 3+ continents.
Frequently Asked Questions
How accurate is the world clock?
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The world clock uses your device's system time and JavaScript's Date object, which is synchronized with network time servers. It's accurate to within milliseconds and updates every second.
Does it account for daylight saving time?
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Yes, the tool automatically detects and adjusts for daylight saving time (DST) based on each city's time zone rules. DST transitions are handled automatically.
Why are cities grouped by region?
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Grouping by geographic region makes it easier to compare times within the same area and find overlapping working hours for teams in similar locations.
Why is the time different from my wall clock?
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Check your device's system time and time zone settings. The tool relies on your device's clock. If your device time is incorrect, the world clock will also be incorrect.
Can I use this for scheduling meetings across time zones?
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Absolutely! This tool is designed for exactly that purpose. Compare times across different regions to find overlapping working hours and avoid scheduling conflicts.
What cities are included in the world clock?
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100+ major cities across all continents including New York, London, Tokyo, Beijing, Sydney, Dubai, Paris, Berlin, Moscow, Singapore, Seoul, Mumbai, Sao Paulo, Toronto, Los Angeles, and many more. Cities are organized by geographic region for easy browsing.
How do I find the best time for a call between three time zones?
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Check each region's current time and look for overlap during standard working hours (9 AM-5 PM local time). For example, 9 AM New York = 2 PM London = 10 PM Tokyo — only New York and London overlap. A better time would be 1 PM New York (6 PM London, 3 AM Tokyo) or use the European morning with Asian afternoon.
How accurate is the DST transition detection?
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The tool uses the browser's built-in Intl.DateTimeFormat and time zone database (IANA tzdata), which is updated regularly by browser vendors. DST transitions are accurate to the exact day and time of change for each time zone. The DST indicator shows 'Yes' when DST is active in that city.
Does the tool work offline?
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After the initial page load, the world clock uses your device's system time to calculate all city times. As long as the page is loaded, it continues to work offline. However, the tool needs an internet connection for the initial page load from the server.
How can I use this for travel planning?
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Check the current time and DST status at your destination before traveling. This helps with: planning arrival activities, adjusting to local time to reduce jet lag, scheduling check-in times with hotels, and coordinating with local contacts. The UTC offset column helps you understand the time difference before you arrive.
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