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一、地方时的计算规律:两地经度相差15°,地方时就相差1小时,东加西减。地球自转的速度为15°/小时,故两地经度每相差15°,地方时就相差1小时。地球自转的方向自西向东,因而,东面的时间比西面的早,向东经度每隔15°,地方时增加1小时,向西
First, the calculation law at the local time: The difference between the longitude of the two places is 15°. When there is a place, there is a difference of one hour. The speed of rotation of the earth is 15°/hour, so the longitude of each place is 15° apart, and the difference between places is 1 hour. The direction of rotation of the Earth is from west to east. Therefore, the time to the east is earlier than that of the west, and the longitude to the east is every 15°, and the place is increased by 1 hour to the west.