International Date Line
The International Date Line (IDL), also known as just the Date Line, is an imaginary line on the surface of the
Earth opposite the
Prime Meridian which offsets the date as one travels east or west across it. Roughly along 180°
longitude, with diversions to pass around some territories and
island groups, it mostly corresponds to the
time zone boundary separating +12 and −12 hours
GMT (UT1). Crossing the IDL traveling east results in a day or 24 hours being subtracted, and crossing west results in a day being added.
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date line
Noun
1. an imaginary line on the surface of the earth following (approximately) the 180th meridian
(synonym) dateline, International Date Line
(hypernym) meridian, longitude, line of longitude
date line
See international date line. 1/3/73
ligne de changement de date
Voir ligne internationale de changement de date. 1/3/73
date-line
date-line
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DATE-LINE
LINEA DEL CAMBIAMENTO DI DATA [GEOGRAFIA]. RIGA CHE PORTA LA DATA DI UN ARTICOLO [GIORNALI]