World Time Zones

Topics: Time zone, Coordinated Universal Time, Daylight saving time Pages: 3 (815 words) Published: December 1, 2010
Megan Kaldunski
General Purpose: To inform
Specific purpose: To teach my audience about the different time zones around the world. Central idea: World time zones might be hard to understand but with the proper knowledge it can be easier to figure out.

I. Attention Getting Material
A. Imagine yourself landing half way around the world and having to be somewhere at a certain time, but you have no idea what time it is there and your phone isn’t working. B. Every air traveller calculates the plus or minus hours and has to rest their watches each time they land. II. Orienting Material

A. I found my information through the Polk Library and other credible sources. B. There are a few points I’m going to go over in this speech. First explaining what time zones are and then some history. C. Times zones can be confusing at first but with a little bit of knowledge when you travel it will be easier to know your times zones. (Connective: Let’s start off by first explaining what time zones are.) BODY

I. To start to understand time zones you need to know a few things. A. According to David Adler, author of “Time Zones”, “In 1884 20 countries agreed to divide the world into 24 time zones, for the 24 hours in a day.” (going to show a map of the time zones and explain how to add or subtract time) 1. The Greenwich Meridian was established as the starting point. 2. And numerous maps and diagrams help visualize these abstract boundaries, including the International Date Line in the Pacific. B. I realize not many of you have the opportunity to travel out of the country; there are a few time zones across the United States. (going to show a map of the US and tell the zones) 1. Pacific

2. Mountain
3. Central
4. Eastern
C. Also, David Alder, author of “Time Zones”, explains the impact of daylight savings time on the time zones. In his book he describes how noon and midnight occur...
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