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date line

Origin of date line
1875-1880
1875-80

International Date Line

or date line

noun
1.
a theoretical line following approximately the 180th meridian, the regions to the east of which are counted as being one day earlier in their calendar dates than the regions to the west.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for date-line
Historical Examples
  • It bore the vice-president's name, and the date-line was Twin Canyons City.

  • "Regular correspondence," he muttered, as he noticed the date-line of the news-item.

    El Diablo Brayton Norton
  • The date-line upon the message gave the sending point as San Francisco.

    Judith of Blue Lake Ranch Jackson Gregory
  • Whitaker glanced up incredulously at the date-line of the sheet.

    The Destroying Angel Louis Joseph Vance
  • Staggering under the weight, she rested its edge on the table and began feverishly to turn the pages, her eye on the date-line.

    The Valiants of Virginia Hallie Erminie Rives
  • He gave one look at the article, and then his eyes went up to the date-line.

  • An absence of entries beneath the date-line seemed to indicate that he was the first guest of the day.

    The Destroying Angel Louis Joseph Vance
British Dictionary definitions for date-line

date line

noun
1.
(often capitals) short for International Date Line

International Date Line

noun
1.
the line approximately following the 180° meridian from Greenwich on the east side of which the date is one day earlier than on the west Also called date line
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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date-line in Science
date line
  (dāt)   
The International Date Line.
International Date Line
  (ĭn'tər-nāsh'ə-nəl)   

An imaginary line on the Earth's surface that is internationally agreed upon as the place where each new calendar day begins. The line extends from the North to the South Pole through the Pacific Ocean, roughly along the 180th meridian. The calendar day to the east of the line is one day earlier than it is to the west of the line. The International Date Line was established at the International Meridian Conference in 1884 in order to standardize time, especially for the purpose of travel.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Word Value for date

5
5
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