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Re: Re: True North - Sorry - 1 hour error in original calc.



If you want better accuracy then adjust the calc according to this table.

Minutes Fast

16        Nov 11                                          Oct 27
15        Nov 17                                          Oct 20
14        Nov 22                                          Oct 15
13        Nov 25                                          Oct 11
12        Nov 28                                          Oct  7
11        Dec  1                                          Oct  4

10        Dec  4                                          Oct  1
 9        Dec  6                                          Sep 28
 8        Dec  9                                          Sep 25
 7        Dec 11                                          Sep 22
 6        Dec 13                                          Sep 19

 5        Dec 15                                          Sep 16
 4        Dec 17                                          Sep 13
 3        Dec 19          May  4          May 27          Sep 11
 2        Dec 21          Apr 25          Jun  4          Sep  8
 1        Dec 23          Apr 21          Jun  9          Sep  5
The Four Days Watches tell Sun Time - exactly right!
 0         Dec 25          Apr 15          Jun 14          Sep  2
Minutes Slow
1         Dec 28          Apr 12          Jun 19          Aug 29
2         Dec 30          Apr  8          Jun 23          Aug 26
3         Jan  1          Apr  5          Jun 29          Aug 22
4         Jan  3          Apr  1          Jul  4          Aug 18
5         Jan  5          Mar 29          Jul  9          Aug 12

6         Jan  7          Mar 26          Jul 18          Aug  4
7         Jan  9          Mar 22
8         Jan 12          Mar 19
9         Jan 15          Mar 16
10        Jan 18          Mar 12

11        Jan 21          Mar  8
12        Jan 24          Mar  4
13        Jan 29          Feb 27
14        Feb  5          Feb 19

If you want to be really accurate, adjust according to received Sun noise.

Regards,
Murray Peterson
VK2KGM

----- Original Message -----
From: "Rick Walter" <rwalter@rain.millersville.edu>
To: "Murray Peterson VK2KGM" <vk2kgm@ihug.com.au>
Cc: "David Tan" <david@dht.pc.my>; "AMSAT-BB" <amsat-bb@AMSAT.Org>
Sent: Thursday, February 08, 2001 1:23 PM
Subject: Re: [amsat-bb] Re: True North - Sorry - 1 hour error in original
calc.


> One more thing ... maybe you did mention it in your original
> message.  Don't forget to include the equation of time in your
> calculations.  The sun runs "fast" and "slow" during the calendar
> year.  Right now, the sun is over 14 minutes "slow".  A sundial located at
> your time zone meridian and your clock on the wall will differ by over 14
> minutes today.  The sun moves 1 degree in 4 minutes.  Therefore, the sun
> will be over 3 degrees away from true south (SE).
>
> Rick, WB3CSY Earth Science and Astronomy teacher
>
>
>
>

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