# NavList:

## A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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Re: Longitude, zone time, and local mean time
From: Bruce Cutting
Date: 2018 Oct 29, 18:49 -0600

In my book, having the right answer is about 1/4 of the problem.  Knowing
how/why is the other 75%.  I've seen any number of exams where he answer
was correct and the derivation was ridiculous.  I always like to derive
the answer using mte most basic calculations (so I don't have to carry
much "baggage").

Cheers!

On Mon, October 29, 2018 15:31, David Fleming wrote:
> First off you have the right answer so you must understand it even if it
> doesn't feel like it. An alternative way to do what Bruce said'
> 150 degrees is a zone center and you are 6d 36.8 east of that, therefore a
> later time. Look up 6d 36.8m in increments and corrections and you find
> that for 26m  27sec for a planet ( 15 deg/hr) therefore time is 23:45 +
> 00:26:27  or  24:11:27
> DaveF
>
>
> [plain text auto-generated]
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