Time Zones
Time Zones
Time Zones: Basic Information
• There are 24 time zones around the world
• Beginning with 0o longitude, they are centered on meridians which are 15o apart
• Each zone is 1 hour earlier or later than the zones on either side of it
1 time zone = 15o = 1 hour
•The time gets later as you travel East from the Prime Meridian
1 hr LATER
• For convenience the calendar day changes at 180o which is called the International Date Line
• This location was chosen because it is the furthest point from the Prime Meridian
0° 15°E
30°E
45°E
60°E
75°E
90°E
105°E
120°E
135°E
150°E
165°E 180°
15°W
30°W
45°W
60°W
75°W
90°W
105°W
120°W
135°W
150°W
165°W
1 hr LATER 1 hr EARLIER
INTE
RN
ATIO
NA
L D
ATE
LIN
E
Time zones do not run in straight lines because if they did they would cut through Countries, Provinces, Cities
Time Zones in Canada
Canadian Time Zones
•In Canada we have 6 time zones •Newfoundland is the first province to experience daylight •NFLD is only 30 minutes different
PACIFIC S.T.
MOUNTAIN S.T.
CENTRAL S.T.
EASTERN S.T.
ATLANTIC S.T.
STANDARD TIME
NEWFOUNDLAND S.T.
Oddity: 30 min
PACIFIC S.T. 12:00pm
MOUNTAIN S.T.
1:00pm
CENTRAL S.T. 2:00pm
EASTERN S.T. 3:00pm
ATLANTIC S.T. 4:00pm
STANDARD TIME
NEWFOUNDLAND S.T. 4:30pm
Oddity: 30 min