1. Time Zones

2. Why do we need time zones?
Think about it!

3. There are 24 different time zones in the world, one for each hour of the day!

4. There are four time zones in the continental United States – Pacific, Mountain, Central, and Eastern.

5. Label your map

6. Time Zones
As you travel east into a new time zone, the time increases by one hour.
If you travel west, the time decreases by one hour.
 + 1
 - 1

7. As you travel EAST , it is one hour later
As you travel EAST , it is one hour later. As you travel WEST , it is one hour earlier.
What time zone is Louisiana in?
Central
If it is 1:00 PM in California, what time is it in Florida?
4:00 PM
If it is 10:00 AM in Texas, what time is it in California?
8:00 AM
If it is 12:00 AM (midnight) in the Eastern time zone, what time is it in the Mountain time zone?
10:00 PM

8. International Date Line
The International Date Line is located around the 180° longitude line. If you cross the International Date Line, you cross into a new day!
World Clock

9. Time Zone Practice E + 1 W - 1

10. International Date Line
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