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What is GMT

World Time and Converters

What is Greenwich Mean Time ?

Time Zone converter tool
Time Zone Converter
World Clock
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Time Zone Converters by region
Convert time between zones

Time at the Shepherd Gate Clock, at the Royal Observatory in Greenwich, UK. GMT stays the same all year round, no DST (Daylight Saving Time) rules apply.

Current Time in the United States

How many time zones does the USA span? Go from EAST TO WEST.

USA timezones
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For quick reference, the mini-clocks below tell you the time in some of them.

USA Clocks
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Canada Clocks
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Asia Clocks
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Time check before phoning USA

If you know the area code of the person you want to call, use USA Phone Area Lookup to make sure it's not too early or to late to make that call.

Current USA Holidays:

Today is Thanksgiving

Our World Clock and Timepiece Apps give you instant answers to time queries.

Digital Timepieces

Globe Time
Where's midday?
Cricket Time
Ground times
Liquid Timer
Digital Hourglass

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.

Sunrise/set Time
Anywhere in the world
Moonrise/set Time
Anywhere in the world
Meeting Planner
Across timezones
Event Time
Countdown to event
Calendar
Any year, any date

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.

Read Time-related Articles

Find out more about Lunar Calendars , Shakespeare and Time and Definitions of Time.

Time power tools

City Clock
Moving time
Sun Time
Season progress
Moon Time
Current phase
place Fast Find - start by typing GMT Tools - check and bookmark ⏲ Time zone converter by place 🌎 Time converter by zone 📅 Event Time Announcer ⓘ What is Greenwich Mean Time?