Human Geography 1123 - 2.4.08

Human Geography 1123 - 2.4.08 - Geography 1123 February 4,...

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Geography 1123 February 4, 2008 Concepts of Modern Geography: Part III 1. Time Zones a. Time is historically based on local solar time/regional standard time b. The need arose for standardization of time for scheduling of transportation and shipping c. In the late 1800’s i. World time zones were established relative to the Prime Meridian at the suggestion of Sir Sanford Fleming of Canada ii. Greenwich Mean Time is considered neutral, while everything east of the PM is later, and west is earlier. d. In 1972, Coordinated Universal Time (UTC), a 24 hour system relative to GMT and tracked by atomic clocks became the world standard 2. How Time Zones Work a. Noon is when the sun hits it’s highest point at any one place i. Reaches apex at a different degrees for different latitudes b. Governments determine the time zones for their countries i. With the establishment of the People’s Republic of China in 1949, China has operated on a single time zone, Standard Time (GMT + 8 hours) year round
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Human Geography 1123 - 2.4.08 - Geography 1123 February 4,...

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