Understands natural language
Write “Friday at 4pm New York in London” just as you would in a message.
The world’s clearest clock
WorldTime
The right time, anywhere.
No timezone maths. Ask naturally, paste a time, or compare cities. We’ll give you one clear answer.
Outside usual working hours
23:00GMT+9
Thursday, 6 August 2026 in Tokyo
8 hours ahead of London
Live around the worldDaylight shown in the signal colour
One question. One answer.
Built for the moment before you hit send.
Respects clock changes
Future conversions use the correct local offset for that date.
Checks the hour
See immediately whether your proposed time lands inside a normal working day.
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Move from a quick answer to the visual meeting planner when several cities, daylight and fairness all matter.
Beyond time zones
Everything that keeps, shapes and marks time.
Follow the Sun and Moon, count down to celestial events, or understand the standards and stories behind the clock.
Sun · Moon · Sky
Your local sky clock
Sunrise, sunset, solar noon, moon phase and live countdowns to eclipses and comet-linked meteor showers.
Explore astronomical time →Atomic · Civil · HistoricWhy time works this way
Atomic clocks, UTC and GMT, US zone abbreviations, leap seconds, calendars and the reason a day has 24 hours.
Read the time guides →Popular city clocks
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