1. Latitude and Longitude
Mr. Cloud
Earth Science

2. Latitude the angular distance North and South of the Equator
Basis: Polaris
Main Reference Latitude: Equator
Line of Latitude are called parallels

3. The Altitude of Polaris = Your Latitude (in the Northern Hemisphere)

4. Longitude
The main reference line for longitude is the Prime Meridian (0o).
Located through the Royal Observatory in Greenwich, England
Basis: Time
Lines of Longitude are called meridians.

5. The Royal Observatory Greenwich, England

6. How do we find Longitude?
GMT = 12:00 pm
Local Time = 2:00 pm
Longitude?
2 hrs x 15o/hr = 30o E

7. How do we find Longitude?
GMT = 12:00 pm
Local Time = 9:00 am
Longitude?
3 hrs x 15o/hr = 45o W

8. How do we find Longitude?
Longitude = 60o E
Local Time = 3:00pm
Time in Greenwich?
60o/ 15o/hr = 4 hr difference
11:00 AM

9. World Time Zones

10. US Time Zones
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