1. A time zone is ... . any of the 24 parts, each about 15° wide, into which the Earth is divided for the purpose of keeping time. The difference between each of the neighbour parts is one hour. a division of the Earth's surface according to temperature, marked by imaginary lines running round it.

Задание

1. A time zone is ... .

any of the 24 parts, each about 15° wide, into which the Earth is divided for the purpose of keeping time. The difference between each of the neighbour parts is one hour.
a division of the Earth's surface according to temperature, marked by imaginary lines running round it.