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1. If it is noon at a location on the Prime Meridian (0°), what time is it at a location 45 degrees west?
The Earth rotates 360 degrees in 24 hours, meaning it moves 15 degrees per hour (360/24=15). Moving west from the Prime Meridian, time gets earlier. 45 degrees west is 45/15 = 3 hours behind. Therefore, noon - 3 hours = 9:00 AM.