11. The Earth is divided into time 12. A time zone is a time zone of the world system. 13. Time zones start at and revolve around the Earth. 14. Moving from one time zone to the next, the time difference is always equal to 15. As you move west, the time is the previous time zone. 16. Time zone divisions are not always 17. The is located mainly at 180 "18. The International Date Line marks the division where the day changes. 19. The latitude and longitude system is also used to mark some of the Louisiana's 20 years ... The west to east border between Louisiana and Mississippi is located Near me