ALL meanings of international date line
in·ter·na·tion·al date line
I i - noun international date line 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 0
- noun international date line an imaginary line drawn north and south through the Pacific Ocean, largely along the 180th meridian: at this line, by international agreement, each calendar day begins at midnight, so that when it is Sunday just west of the line, it is Saturday just east of it 0