http://aa.usno.navy.mil/faq/docs/us_tzones.html
The U.S Naval Observatory offers the official explanation of standard time, including a reference to November 18 and a map of world time zones. Because the map they offer is for the whole world, I suggest you visit another government Web site for a map of the U. S time zones:
http://nist.time.gov
The map here offers a clear, color-coded view of U.S. time zones. If you click on your zone, you can find out what time it is to within 2.0 seconds.
http://memory.loc.gov/ammem/today/nov18.html
This Library of Congress “Today in History” site offers a wealth of historical information about what happened on November 18, 1883. They include archival photographs and links to yet more information on the subject.