What is local time in Monrovia 10° W when G.M.T is 3:00pm?
Local time differs from every 10 of longitude and the next by how many minutes?
When is the shortest daylight duration of the year in the Southern Hemisphere?
At what longitude will the time be 8:30pm when it is noon at Greenwich?
At what season is the north of the Arctic Circle referred to as the “land of the midnight sun”?