Time Zones. The earth has 24 hours in a day, and 24 different time zones. All area within a time zone is the same from the north pole to the south pole. Each is based on 15 o of longitude. When you go east, you go ahead an hour per zone. W E - +. A. B. C. D. E. F.
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The earth has 24 hours in a day, and 24 different time zones.
All area within a time zone is the same from the north pole to the south pole.
20o E 35o E 50o E 65 o E 80o E 95o E
Canada stretches almost 90o from east to west.
How many time zones do we have?
Find the six different blue colours-one per zone. (Ignore yellow and dark purple).
The lines of longitude have been adjusted. Why?
(blue) DST used
(orange) DST no longer used
(red) DST never used