world clock … world time … world time zones

history of time zones and world clocks

As trade among countries expanded with the invention of the railroads, a more universal way of determining world time became more necessary. In the late 1870s Sanford Fleming, a Canadian engineer, devised a plan to end the confusion of determining world time between countries worldwide.




what time is it around the world

The world clocks below show world times for different international cities of the world.
The colors equal day & night --
yellow is noon,
dark blue/purple is midnight,
and brownish colors are between day & night.

These world clocks are set according to your computer's clock.
The clocks also are set for Daylight/Summertime Time.


we have all the time in the world … world time clock

New York
NY, USA

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in New York.
London
United Kingdom

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in London.
Paris
France

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Paris.
Moscow
Russia

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Moscow.
Tokyo
Japan

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Paris.

24 hour world time clocks … world time server

Chicago
IL, USA

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Chicago.
Sao Miguel
Azores Islands

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in San Miguel.
Athens
Greece

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Athens.
Baghdad
Iraq

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Baghdad.
Darwin
Australia

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Darwin.

time differences around the world … world time clocks

Denver
CO, USA

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Denver.
Sao Paulo
Brazil

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in San Paulo.
Cairo
Egypt

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Cairo.
Sana
Yemen

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Sana.
Sydney
Australia

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Sydney.

time zones around the world … time zones of the world

Los Angeles
CA, USA

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Los Angeles.
Buenos Aires
Argentina

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Buenos Aires.
Cape Town
South Africa

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Cape Town.
Karachi
Pakistan

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Karachi.
Solomon
Islands

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Solomon.

time around the world … day night world clock

Anchorage
AK, USA

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Anchorage.
St. John's
Newfoundland

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in St. John's.
Abu Dhabi
UAE

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Abu Dhabi.
New Delhi
India

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in New Delhi.
Wellington
New Zealand

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Wellington.

world time zone … world clock time zones … time zones world

Honolulu
Hawaii

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Honolulu.
San Juan
Puerto Rico

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in London.
Islamabad
Pakistan

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Islamabad.
Beijing
China

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Beijing.
Hanoi
Vietnam

Your browser is not configured to show Java 1.1 applets. This would show a clock with the time in Hanoi.

clock, world time … international time … global time

Our natural concept of time is linked to the rotation of the earth and we define the length of the day as the 24 hours it takes (on average) the earth to spin once on its axis. As time pieces became more accurate and communication became global, there needed to be a point from which all other world times were based.

world time zones … international time zones … global time zones

Since Great Britain was the world's foremost maritime power when the concept of latitude and longitude came to be, the starting point for designating longitude was the "prime meridian". The "starting" point for calculating the different time zones was agreed to be the Royal Greenwich Observatory,UK, which is zero degrees. The longtitudes are calculated East (+GMT) and West(-GMT) to determine the time zone maps for all countries.

international time … world clock time

Unfortunately the Earth does not rotate at exactly a constant rate. Due to various scientific reasons and increased accuracy in measuring the earth's rotation, a new timescale, called Coordinated Universal Time (UTC), has been adopted and replaces the term GMT. The Navy, as well as civil aviation, uses the letter "Z" (phonetically "Zulu") to refer to international time at the prime meridian. So when you hear "Zulu Time", it is known as Greenwich Mean Time (GMT).

how is the world divided up in time zones

In 1884, 27 nations met in Washington, D.C. for a conference that is today is called the International Meridian Conference. During the conference, the representatives agreed on the international time zones and the time zone maps that we use today. They also agreed that the day would start at midnight. These steps became the basis for world time, a world time clock, and a world map comprised of international time zones. While a China and India have only 1 time zones countrywide, Russia has 11 different time zones. The North American Time Zones are divided into 7 times zones.
  • Newfoundland time zone
  • Atlantic time zone
  • Eastern time zone
  • Central time zone
  • Mountain time zone
  • Pacific time zone
  • Alaska time zone

what time is it around the world

The Canadian Time Zones have six time zones and the American Time Zones have all seven different usa time zones. The United States time zones also observe Daylight Savings Time from March to Nov. Mexico which has 3 time zones, observes Daylight Savings Time from May to September.

world time map … world time chart … time zone world map

As communication is more immediate with the use of better telephone reception and the internet, contacting people worldwide has become more important. Our International Planners and Calendars contain USA Time Zone Maps, World Time Zone Maps, and an easy-to-use time zone converter for making international communication easier.