Author
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Topic: Hawaii By Sextant: Special Problem #3
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Ian
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posted April 09, 2020 01:21 PM
Hello!
The time listed for the twilight on 7 JUL 82 is 22 13, which was not like any time I computed. I estimated that the DR location would be something like 41N and 131 30W.
I did notice It is approximately 1/2 between Civil and Nautical twilight -- is that how it was computed?
For the times I did compute I got the following:
GMT Sunset at 45N 135W: 19 49 GMT Sunset at 40N 135W: 19 32 Adjustment to 41N: 3.4m GMT Sunset at 41N 135W: 19 35
Adjustment to 131 30W -14m GMT Sunset at 41N 131 30W: 19 21
Watch TIme: +2h WT Sunset: 21 21
GMT Civil at 45N 135W: 20 25 GMT Civil at 40N 135W: 20 04 Adjustment to 41N: 4.2m GMT Civil at 41N 135W: 20 08
Adjustment to 131 30W -14m GMT Civil at 41N 131 30W: 19 54
Watch TIme: +2h WT Civil: 21 54
GMT Nautical at 45N 135W: 21 21 GMT Nautical at 40N 135W: 20 45 Adjustment to 41N: 5.8 GMT Nautical at 41N 135W: 20 51
Adjustment to 131 30W -14m GMT Nautical at 41N 131 30W: 20 37
Watch TIme: +2h WT Nautical: 22 37
Was my approach off, or did I make a miscalculation?
Thanks!
From: San Diego, CA
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David Burch
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posted April 09, 2020 01:31 PM
Does your answer agree with what is in book? if not, what is difference you find?
From: Starpath, Seattle, WA
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