London Time: Live World Clock
Show the current civil time in several IANA zones, updated every second, starting from your zone plus three fixed ones.
Processed entirely in your browser — nothing you enter here is ever uploaded.
Result
About this tool
This page opens the world clock with London already added to the card list, alongside the tool’s own defaults: your browser’s time zone, UTC, New York, and Tokyo. London’s current time, date, and UTC offset are visible the moment the page loads.
London observes British Summer Time for part of the year, so its offset from UTC shifts between UTC+0 and UTC+1 depending on the date — a detail that trips up quick mental math and is exactly what a live clock settles instantly.
Every card updates once a second, and you can add any other IANA time zone your browser supports using the selector below the list — useful for comparing London against a call, a flight, or a deadline in another city at the same time.
Example. A browser in America/Chicago opens four cards: that zone, UTC, America/New York, and Asia/Tokyo. Each card is the current instant, and the seconds line is redrawn every 1000 ms.
Limit. The clocks show the present instant only. There is no remove button, added zones disappear on reload, and a background tab may delay the one-second timer.