Time Zones.

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Presentation transcript:

Time Zones

Daylight on one side; nighttime on the other. The Earth’s Rotations Daylight on one side; nighttime on the other. How long does it take for the Earth to rotate once on it’s axis?

24 Scientists created a different time zone for each hour of the day, so how many time zones are there in the world?

What is the starting point for measuring time?

This imaginary line runs from the North Pole to the South Pole and passes through , England. Greenwich

Most time zones? Least time zones? Asia Australia

International Date Line

Thursday in North America Everything west of the line is one day ahead of everything east of the line. Thursday in North America Friday in Asia

How do time zones affect your life?

How many time zones does the United States have? 6

Pacific Eastern Mountain Central Alaskan Hawaiian