NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Time Zones
From: Dan Hogan
Date: 1999 Aug 17, 4:18 PM
From: Dan Hogan
Date: 1999 Aug 17, 4:18 PM
Millard: I haven't seen a reply...so. You navigate by Universal Time (GMT, etc) and Zone Time. The "Standard Time Zones" are political. The are based on the 180 degrees divided by 15, for the prime meridians, But there is a lot of political gerrymandering of the lines and times. You would use it to check your local arrival time. Otherwise use Zone Time. Or better yet navigate using UT/GMT. Just remember that the zones are every 15 degrees and extend 7.5 degrees either side of the zone meridian. >I just happened to look in a old World Atlas at a map giving the World >Time Zones. It was color coded with four colors for the time zones. > >Standard Time Zone for even-numbered hours from Greenwich time. >Standard Time Zone for odd-numbered hours from Greenwich time. >Time varies from he standard time zone by half hour. >Time varies from he standard time zone by other than half hour. > >My question is: Does these half hour time zones effect any type of >navigation... Land or Sea. Dan Hogan WA6PBY C27 "Gacha" dhhogan@nav.cnchost.com Navigation-L: http://nav.cnchost.com
