Q. What happens when one crosses 180 degrees longitude from east to west?
Answer: loses a day
Notes: One loses a day when he/she crosses 180 degrees longitude from east to west and gains a day when crosses 180 degrees from west to east. Depending on which time zone the country follows, the time difference on either side of the line is not always 24 hours.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 43 in Geology - Earth Movements, Latitude, Longitude and Time in above course in App.