an imaginary line in the Pacific Ocean going from north to south that divides the world into two parts so that the date in the eastern half is one day earlier than the date in the western half. The international date line is often simply called the date line.
Synonyms and related words
Imaginary lines around the earth
the Antarctic Circle
the Arctic Circle
the date line
the international date line
noun singular
US
DEFINITIONS1
1
an imaginary line in the Pacific Ocean going from north to south that divides the world into two parts so that the date in the eastern half is one day earlier than the date in the western half. The international date line is often simply called the date line.