[TowerTalk] Fwd: Strange behavior

[Hans Hammarquist]

To add "salt to the injury" the solar noon varies a little for different times of the years.

Hans - N2JFS


-----Original Message-----
From: jimlux <jimlux at earthlink.net>
To: towertalk <towertalk at contesting.com>
Sent: Mon, Jan 23, 2017 11:49 pm
Subject: Re: [TowerTalk] Strange behavior


On 1/23/17 6:22 PM, Roger (K8RI) on TT wrote:
> Noon by the clock, or noon by the sun (solar time)? Depending on
> location, the clock can be nearly an hour off particularly if in a state
> with a skewed time zone, or near the edge of a time zone. Michigan
> (where I live) is near the Western edge of the Eastern time zone. My
> location is off by nearly an hour between EST and Solar time.
>
> 73, Roger (K8RI)

The Naval Observatory Astronomical Applications site generates tables
that are corrected for your location, etc.

http://aa.usno.navy.mil/data/index.php

you're looking for "Sun transit"
http://aa.usno.navy.mil/data/docs/RS_OneDay.php


>
> On 1/23/2017 3:31 PM, Jim Brown wrote:
>> On Mon,1/23/2017 8:32 AM, Michael Clarson wrote:
>>> David's method of using a topo map and sighting an object is the best
>>> way.
>>
>> That works IF you can see the distant object. My towers are in a dense
>> redwood forest. I established true north from the shadow of the tower
>> at solar noon using online tables by date, on a day when the sun got
>> through the trees to cast a shadow at noon, and laid down a log along
>> the shadow.
>>
>> https://www.esrl.noaa.gov/gmd/grad/solcalc/
>>
>> 73, Jim K9YC
>>
>> _______________________________________________
>>
>>
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>

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