Calculating sunrise and sunset between two points

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bawn79 B
bawn79 Dec 2, 2008 20:51:37

Sorry all,

I've been checking out a passage tomb and I was wondering if I have an ordnance survey reference for the tomb and an ordance survey for the hill which can be seen from the passage, could anyone on here calculate if any significant sunrise / sunsets are linked to this passage?

Its just a rough estimate I need.

T tiompan
tiompan Dec 2, 2008 21:40:18
Replying to bawn79

bawn79 wrote:
Sorry all,

I've been checking out a passage tomb and I was wondering if I have an ordnance survey reference for the tomb and an ordance survey for the hill which can be seen from the passage, could anyone on here calculate if any significant sunrise / sunsets are linked to this passage?

Its just a rough estimate I need.

Hi Bawn , it would be rough but doable . As much info as poss would help . I'm assuming the hill is visble from within the passage if not a compass bearing from the passage would be nice .

T tiompan
tiompan Dec 2, 2008 22:45:34
Replying to bawn79

bawn79 wrote:
Sorry all,

I've been checking out a passage tomb and I was wondering if I have an ordnance survey reference for the tomb and an ordance survey for the hill which can be seen from the passage, could anyone on here calculate if any significant sunrise / sunsets are linked to this passage?

Its just a rough estimate I need.

Hi Bawn , I took a guess and checked the Kilmacow wedge wedge tomb to Knockfeerina .It's very imporatnt to have the altitude of both sites but I think I managed to get them from the archaeology ie website .I have assumed that the sighting is to the highest point on the hill which gives a declination of -23.71 very close to winter solstice sunset which is ideally -24 . I'll double check everything tomorrow but I think it's ok .

G gjrk
gjrk Dec 3, 2008 01:32:53
Replying to bawn79

Welcome back Bawn :) A right block of stuff there! Did you get to Glantane after?

F FourWinds
FourWinds Dec 3, 2008 06:46:31
Replying to bawn79

Good to see someone else has been to Moanmore West, too. It's one of Ireland's oddities. Lovely site in a bad location that I keep meaning to return to.

U UncleRob
UncleRob Dec 4, 2008 12:55:58
Replying to bawn79

Hi Bawn
Good question!
I bookmarked this page to come back to a while ago, I have to say I haven't tried it yet myself...
http://www.geomancy.org/astronomy/sunfinder/calculator/index.html

See what you think.

Rob