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Re: Lost at Sea with a sextant puzzle
From: Fred Hebard
Date: 2019 Jun 23, 22:02 -0400

I believe if you break the year into the four seasons and divide the 90 degrees in each season into the number of days in the season as the argument for cosine, accuracy can be improved considerably.

Fred Hebard

mbiew@comcast.net

On Jun 23, 2019, at 14:32, Alexandre Eremenko <NoReply_Eremenko@fer3.com> wrote:

Correction.
The formula for the declination which I wrote requires correction:

declination=-23.44 cos((365/360)(N+10)), where N is the day of the year.
(In the previous formula that I wrote, the slash between 365 and 360 was missing).

Alex.

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