有关于时间的适合小学生做的阅读理解吗，急用！

Earth's rotation is always from west to east, the west than the east to see the sun, the east than the west side of the time of the morning. Moment to the east and the west side of the margin at all times not only to the clock, but also in minutes, and seconds to calculate it to the people's daily lives and work have brought a lot of inconvenience.
In order to overcome the chaos of time, in 1884, held in Washington, an international track degree j meeting, the provision will be the world's divided into 24 time zones. They are in the time zone (zero area), East District 1-12, District 1-12 West. Each time zone across the longitude 15 degrees, the time is exactly 1 hour. Finally, the East and West Area 12, the inter-7.5 degrees longitude, the east, bounded by 180 degrees west longitude. Each of the Central time zone by time line is the uniform application of this time zone the time zone is called. Two adjacent time zone difference in time between 1 hour. For example,