Date line
Date line Date line The hypothetical line on the surface of the earth fixed by international or general agreement as a boundary on one side of which the same day shall have a different name and date in the calendar from its name and date on the other side. Also called {International Date Line}. [Webster 1913 Suppl. +PJC]

Note: Speaking generally, the date line coincides with the meridian 180[deg] from Greenwich. It deflects between north latitudes 80[deg] and 45[deg], so that all Asia lies to the west, all North America, including the Aleutian Islands, to the east of the line; and between south latitudes 12[deg] and 56[deg], so that Chatham Island and the Tonga group lie to the west of it. A vessel crossing this line to the westward sets the date forward by one day, as from Sunday to Monday. A vessel crossing the line to the eastward sets the date back by one day, as from Monday to Sunday. Hawaii has the same day name as San Francisco; Manila, the same day name as Australia, and this is one day later than the day of Hawaii. Thus when it is Monday May 1st at San Francisco it is Tuesday may 2d at Manila. [Webster 1913 Suppl.]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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  • date line — INTERNATIONAL DATE LINE * * * …   Universalium

  • date line — date′ line n. hor International Date Line • Etymology: 1875–80 …   From formal English to slang

  • date line — INTERNATIONAL DATE LINE …   English World dictionary

  • date line — noun an imaginary line on the surface of the earth following (approximately) the 180th meridian • Syn: ↑dateline, ↑International Date Line • Instance Hypernyms: ↑meridian, ↑line of longitude * * * noun see …   Useful english dictionary

  • date line — /ˈdeɪt laɪn / (say dayt luyn) noun 1. a line in a letter, newspaper article, or the like, giving the date (and often the place) of origin. 2. Also, International Date Line. a line, theoretically coinciding with the meridian of 180° from Greenwich …   Australian English dictionary

  • date line — tarptautinė demarkacinė paros laiko linija statusas T sritis Gynyba apibrėžtis Linija, apytiksliai sutampanti su 180 laipsnių dienovidiniu (priešingas Grinvičo dienovidiniui) ir aplenkianti tam tikras gyvenamąsias teritorijas. Kertant šią liniją …   NATO terminų aiškinamasis žodynas

  • Date Line — (also International Date Line) noun an imaginary North–South line through the Pacific Ocean, chiefly along the meridian furthest from Greenwich, to the east of which the date is a day earlier than it is to the west …   English new terms dictionary

  • date line — See international date line …   Military dictionary

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