where are you when you have this information?
- Thread starter Ross
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- Jan 22, 2008
- 519
Bermuda at noon
Your in Bermuda man, but where I live, I'm in the office at that time of day on Dec 3.
Your in Bermuda man, but where I live, I'm in the office at that time of day on Dec 3.
Hey Don , This isn't to be taken seriously.
The whole thing is just for fun. The rest of you, stop guessing and start some real serious thinking. If the sun is 55d 30m above the horizon, then it must be 34d 30m away from directly over head. If the sun is directly over head at 22d 07m south then you must be 11d 23m north. If you are seeing noon at 10:30 EST then you must be 22d 30m east of 75d west.
The whole thing is just for fun. The rest of you, stop guessing and start some real serious thinking. If the sun is 55d 30m above the horizon, then it must be 34d 30m away from directly over head. If the sun is directly over head at 22d 07m south then you must be 11d 23m north. If you are seeing noon at 10:30 EST then you must be 22d 30m east of 75d west.
sounds like a Seinfeld joke
The one where Kramer was doing the movie showings. All you had to do was press a button, but he didn't know which one you pushed. Si finally he said "Why don't you just tell me which movie you want to see?" So why don't you tell us how, where and whyfore in this calculation? Either that or I'm going to see Boat Babe.
The one where Kramer was doing the movie showings. All you had to do was press a button, but he didn't know which one you pushed. Si finally he said "Why don't you just tell me which movie you want to see?" So why don't you tell us how, where and whyfore in this calculation? Either that or I'm going to see Boat Babe.
are You heading SE ??
Would that be a place in the atlantic where the water and the air temperature are in the mid to upper 60s??? 33d 23'N about 52D W??? I do not remember how!!
Would that be a place in the atlantic where the water and the air temperature are in the mid to upper 60s??? 33d 23'N about 52D W??? I do not remember how!!
34d 30m minus 22d 7m ... isn't that 12d 23m?
What am I missing? 34d 30m minus 22d 7m ... isn't that 12d 23m? Plus, if I plug 11d23m N x 52d30m W into the astonomical calculator (form B at the link below) I get local noon at 10:20EST (not 10:30) and I get a max elevation of 56.5 degrees (not 55.5d) Try 12d30m N x 55d W and see what you get then. But good questions - I learned something about how sun sites work. o , o , W 52 30, N11 23 Altitude and Azimuth of the Sun Dec 3, 2007 Zone: 5h West of Greenwich Altitude Azimuth (E of N) 10:09 56.4 175.5 10:10 56.4 175.9 10:11 56.5 176.3 10:12 56.5 176.8 10:13 56.5 177.2 10:14 56.5 177.6 10:15 56.5 178.0 10:16 56.5 178.4 10:17 56.5 178.9 10:18 56.5 179.3 10:19 56.5 179.7 10:20 56.5 180.1 10:21 56.5 180.5 10:22 56.5 181.0 10:23 56.5 181.4 10:24 56.5 181.8 10:25 56.5 182.2 10:26 56.5 182.6 10:27 56.5 183.1 10:28 56.5 183.5 10:29 56.4 183.9 10:30 56.4 184.3
What am I missing? 34d 30m minus 22d 7m ... isn't that 12d 23m? Plus, if I plug 11d23m N x 52d30m W into the astonomical calculator (form B at the link below) I get local noon at 10:20EST (not 10:30) and I get a max elevation of 56.5 degrees (not 55.5d) Try 12d30m N x 55d W and see what you get then. But good questions - I learned something about how sun sites work. o , o , W 52 30, N11 23 Altitude and Azimuth of the Sun Dec 3, 2007 Zone: 5h West of Greenwich Altitude Azimuth (E of N) 10:09 56.4 175.5 10:10 56.4 175.9 10:11 56.5 176.3 10:12 56.5 176.8 10:13 56.5 177.2 10:14 56.5 177.6 10:15 56.5 178.0 10:16 56.5 178.4 10:17 56.5 178.9 10:18 56.5 179.3 10:19 56.5 179.7 10:20 56.5 180.1 10:21 56.5 180.5 10:22 56.5 181.0 10:23 56.5 181.4 10:24 56.5 181.8 10:25 56.5 182.2 10:26 56.5 182.6 10:27 56.5 183.1 10:28 56.5 183.5 10:29 56.4 183.9 10:30 56.4 184.3
Taylor, I pulled the numbers from the old farmers
almanac and from my very limited knowledge . All of it just for fun and to get this wonderful forum thinking a little. You decided to dig a little and are the better for it. Play a little and have some fun without hurting anyone. Go ahead and post a new problem after you define where on earth the place is that those lats and longs describe. I believe that they are in northeastern Venezuela. I really had no idea when I put the numbers out there.
almanac and from my very limited knowledge . All of it just for fun and to get this wonderful forum thinking a little. You decided to dig a little and are the better for it. Play a little and have some fun without hurting anyone. Go ahead and post a new problem after you define where on earth the place is that those lats and longs describe. I believe that they are in northeastern Venezuela. I really had no idea when I put the numbers out there.
or...
between Granada and Barbados??? I Would like to be taking the measurements myself... Marco
between Granada and Barbados??? I Would like to be taking the measurements myself... Marco
GHA 182 38 -6 S22 01 8
Ok, GHA Sun=GMT(arc) + GHA at GMT0hrs + (v) Coorn. GHA 182 38=4h 30m (67) + 182 38 I'm lost. will try again tommorrow.
Ok, GHA Sun=GMT(arc) + GHA at GMT0hrs + (v) Coorn. GHA 182 38=4h 30m (67) + 182 38 I'm lost. will try again tommorrow.
an explanation
This link explains it easy: http://www.johnforester.com/Maritime/CelestialNav2.htm Thanks
This link explains it easy: http://www.johnforester.com/Maritime/CelestialNav2.htm Thanks
OhOh . I think I might have started something
here. http://www.celestialnavigation.net/why.html This is my favorite site for understanding celestial navigation. A person could spend a lifetime on the finer points of navigation and navigational astronomy. If you google the following terms you will get enough detail to keep you occupied until spring. Local apparent noon. Greenwich hour angle. Finding watch rate. Quartz watch accuracy. Ocean navigator. I would be pleased if someone else posted a problem of this sort.
here. http://www.celestialnavigation.net/why.html This is my favorite site for understanding celestial navigation. A person could spend a lifetime on the finer points of navigation and navigational astronomy. If you google the following terms you will get enough detail to keep you occupied until spring. Local apparent noon. Greenwich hour angle. Finding watch rate. Quartz watch accuracy. Ocean navigator. I would be pleased if someone else posted a problem of this sort.
Marco , that is a good link. I hadn't
seen that one. By the by. A Davis Mark 3 plastic sextant is inexpensive and accurate enough for sail boat navigation. For those of us that are land locked, a pan of water set outside will make an artificial horizon but you must divide the sextant reading by 2.
seen that one. By the by. A Davis Mark 3 plastic sextant is inexpensive and accurate enough for sail boat navigation. For those of us that are land locked, a pan of water set outside will make an artificial horizon but you must divide the sextant reading by 2.
- Jan 22, 2008
- 519
Wish I was there
The latidude is 55d 30 less the declination of 22d 07 so you are at 33deg 27 N . Eastern standard time is 5 hours behind GMT so if the sun is highest at 10:30 EST this 3 hours 30 mins behind GMT. Every hour is equivalent to 15 deg of longitude so 3 1/2 hours is 52deg 30 West So 3307 N 5230 W or 622 miles from Bermuda on a bearing of 81 deg.
The latidude is 55d 30 less the declination of 22d 07 so you are at 33deg 27 N . Eastern standard time is 5 hours behind GMT so if the sun is highest at 10:30 EST this 3 hours 30 mins behind GMT. Every hour is equivalent to 15 deg of longitude so 3 1/2 hours is 52deg 30 West So 3307 N 5230 W or 622 miles from Bermuda on a bearing of 81 deg.
Lowestoft, When I posted that problem I also
made that mistake. When the sextant reads 55d 30m in means the sun is 34d 30m off your zenith. The sun is directly overhead at 22d07m south 52d 30m west lon. therefore you must be at 12d 23m north and 52d 30 west since it is local apparent noon.
made that mistake. When the sextant reads 55d 30m in means the sun is 34d 30m off your zenith. The sun is directly overhead at 22d07m south 52d 30m west lon. therefore you must be at 12d 23m north and 52d 30 west since it is local apparent noon.
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