1. date line - Noun
2. Date line - Proper noun
an imaginary line on the surface of the earth following (approximately) the 180th meridian
Source: WordNetA nautical date line is implied but not explicitly drawn on time zone maps. Source: Internet
In 1995, Kiribati unilaterally moved the international date line far to the east to encompass the Line Islands group, so that the nation would no longer be divided by the date line, courted controversy. Source: Internet
Two equator crossings on one crossing of the International Date Line. Source: Internet
Instead of the international date line convention, there are varying opinions as to where the day changes. Source: Internet
July September * July 4 Samoa changes its time zone to being 3 hours behind California, such that it crosses the international date line and July 4 occurs twice. Source: Internet