Time Zones

What is a time zone?
Time zones are scattered all over the word they are used to measure times all over the world.

We have time zones o measure times all over the world for example in China the time will be 1:30 but in the U.S.A it will be 7.30 if we all had one time zone in china it will be dark at 12 o'clock and in the U.S.A it will be still light at 12:00 so it would not work properly

How are the time zones set? every 15˚ on the earth the time zone changes.

What way does the earth rotate? Anti-Clockwise