World Clock
See the current time and date across major cities and time zones at a glance.
This tool runs entirely in your browser. Your files are never uploaded to a server.
UTC
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America/New York
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Europe/London
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Europe/Istanbul
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Asia/Dubai
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Asia/Tokyo
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Australia/Sydney
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What this tool does
Shows the current time and date in 7 fixed locations at once — UTC, New York, London, Istanbul, Dubai, Tokyo, and Sydney — updating every second.
How to use it
There's nothing to configure: the page loads with all 7 clocks running immediately, each showing the time in that zone right now. No date/time input is needed since it always tracks the present moment.
Worked example
When it's 14:00 in London on a given day, the same instant reads 15:00 in Istanbul, 09:00 in New York, 18:00 in Dubai, and 23:00 in Tokyo (adjusting further for whichever daylight-saving rules apply to each zone on that date) — all seven cards update together every second from the same underlying clock tick.
Where the time comes from
Each clock is derived from your own device's system clock — read once per second in your browser as new Date() — and reformatted into each destination time zone using Intl.DateTimeFormat, rather than being fetched from any time server. If your device's clock is wrong, every zone shown here will be off by the same amount.
What isn't customizable
The seven locations are fixed in the tool's code — there's no way to add, remove, or reorder cities, or to switch between a 24-hour and 12-hour display, which follows your browser's locale automatically instead.
Limitations
Daylight-saving transitions are handled by the browser's built-in time-zone data, which can occasionally lag behind a very recent, unusual, or newly announced change to a country's DST rules. This isn't a scheduling or meeting-planning tool — it only shows the current moment, not a comparison across arbitrary future dates.
Privacy and processing
Everything runs locally in your browser using its own clock and time-zone database. Nothing is sent to a server, and no location or time data is collected.
Frequently Asked Questions
- Where does the time shown here come from?
- From your own device's system clock, read every second in your browser and reformatted for each zone — not from an external time server. If your device's clock is off, every zone shown will be off by the same amount.
- Can I add my own city or remove one of the seven?
- No, the seven locations — UTC, New York, London, Istanbul, Dubai, Tokyo, and Sydney — are fixed in the tool and can't be customized, added to, or reordered.
- Does it handle daylight-saving time correctly?
- Yes, for ordinary transitions — it uses your browser's built-in IANA time-zone data, which reflects standard DST rules, though very recent or unusual rule changes can occasionally lag behind.