World Clocks and Time Tools
New to Greenwich Mean Time? Read: What is GMT ?
Time power tools
UK time is GMT only during the winter months. British Summer Time is one hour ahead of GMT (GMT+1) .
GMT and Current Time Across the European Union
Current Time in the United States
How many time zones does the USA span? Go from EAST TO WEST .
For quick reference, the mini-clocks below tell you the time in some of them.
If you know the area code of the person you want to ring, use USA Phone Area Lookup to make sure it's not too early or to late to make that call.
Choose a Time Gadget
Imagine travelling to a different country, in a different part of the world, and waking up much earlier or later, due to the time zone difference.
On holiday it would be useful to know what time the sun rises and sets, even before our biological clock finally adjusts. Bookmark the Sunrise gadget below and use it in conjunction with the Moon one.
If only your ideas travel, as it happens in today's international business, the Meeting Planner will come in handy.
Create a countdown for social events or personal milestones using the Event Time tool. We use GMT so you can share the chosen time and date internationally without worrying about daylight saving and time zone differences.