Date Line


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Date Line

 

an arbitrary line drawn on the earth’s surface to demarcate places where the time of day is the same but the date differs by one full day. The date line coincides with the 180th meridian for most of its length, departing in places to avoid passing over dry land. East of the date line it is one day earlier than it is to the west. The date line serves to maintain a correct count of days of the month when traveling.

The traveler moving eastward passes through points where clocks indicating local (or zone) time show an ever-increasing time reading as compared to the local time at the starting point. By gradually setting his watch ahead, the traveler will have gained a day at the end of a journey around the world. Conversely, if the traveler makes his journey around the world from east to west he will have lost a day at the end of the journey. To resolve this problem, ships or airplanes crossing the date line from west to east set the date back by one day. For instance, if they approach the date line at ten o’clock on May 2, after crossing the line they will assume that it is ten o’clock on May 1. In traveling from east to west one day is added to the calendar date, so that if the date line is approached at ten o’clock on May 2, the time is assumed to be ten o’clock on May 3 after the date line has been crossed.

international date line

international date line
The Greenwich antimeridian, or 180° longitude. The international date line, however, does not follow the Greenwich antimeridian exactly but is distorted to place inhabited areas definitely on one side or the other of the line to avoid a difference in date in an inhabited area. Also called a calendar line or a date line.
References in periodicals archive ?
Several nations tout their proximity to the International Date Line in their tourism promotions.
and others to the east of the International Date Line. Today, the island nation conducts an increasing amount of its trade with New Zealand, Australia, and other Asian-Pacific nations to the west of the line.
The International Date Line is an imaginary line that divides the Pacific Ocean, demarcating when one day ends on the globe and another day begins.
The third part focuses on the difficult concept of The International Date Line, the meridian opposite Greenwich's, and its implementation.
Which Pacific country is the first to see the sun each day, being nearest the International Date Line?
interests in the Pacific Ocean from the North Pole to the South Pole and from the continental West Coast to the international date line. The U.S.
A weak and waning El Nino, such as the one currently lingering around the international date line in the Pacific Ocean, usually means a coolerthan-normal summer for large parts of the Midwest and South.
The Reservists traveled for 22 days as they chased time zones, then crossed the international date line on their way to Hawaii and the continental United States.
The thirteen tales are meant to follow the Devil's influence from the Date Line into the setting sun, and his relationship especially with the working men and women who struggle to make ends meet without complaints or whining.
The term 'typhoon' refers to such cyclones occurring in the Pacific west of the International Date Line and north of the Equator.
Most Asian countries don't use daylight-saving time, so after we make the switch that business with the international date line will become even more complicated.
Because the Prime Minister was on the other side of the International Date Line, his statement arrived in time for the previous night's newscasts.