Question
It takes 24 hours for the earth to complete one rotation around sun, that is 360 degree, Time is determined by where you are located in relation to the earth's rotation around the sun. For example, during the "day" you are located within the circle of illumination-the area of the earth receiving the sun rays. As the sun sets, your location is rotating out of the circle of Illumination to the backside of the earth. Mean while another location is rotating into the circle of Illumination. The time that it takes for the earth to rotate 1 degree long, = 4 minutes. In 1 hour the earth rotates 15 degree long. The earth rotates eastward, therefore the sun appears to rise in the east and set In the west. The earth has been divided up into time zones that generally correspond to 1-hour Intervals, every 15 degree of long, starting with the Prime Meridian (0 degree) - (Greenwich Mean Time). Each time zone Is based on a Central Meridian. International Pate Line While time changes every 15 degree, the day changes in two ways. After Midnight Crossing the International Date Line (180 degree) When crossing the IND heading east - subtract 1 day: Friday becomes Thursday When crossing the IND heading west - add 1 day: Friday becomes Saturday If it Is noon in Greenwich, what time would it be at: 15 degree E? 30 degree E? 15 degree W? 45 degree W? What is the central meridian for the pacific standard Time zone? Use the time zone map to calculate the standard time for the following locations.
Explanation / Answer
1) 1 pm
2) 2 pm
3) 11 am
4) 9 am
3) 1) tuesday 6 pm
2) 1 am monday
3) 2 am monday
4) 6 am thursday
5) 1 pm thursday
