All Questions
3 questions
11
votes
2
answers
2k
views
Always orient a sundial towards polar north?
I had a horizontal sundial made specially for my latitude (approx. 38° N). The default correct way to orient a sundial (in the northern hemisphere) is with the gnomon pointing towards polar north. The ...
- 221
1
vote
2
answers
125
views
Can I use the Tokyo Skytree as clock?
After my observation today at the Skytree in Tokyo, I am wondering if this building could be used as a giant sundial?
As an aside, it would be interesting to consider how the Skytree might be used ...
- 13
2
votes
1
answer
1k
views
Hour angle sunrise calculation problem
I am trying to program a sunrise/sunset calculator using this formula tutorial.
If you follow the steps, eventually you get to this formula for "H" (the "hour angle"):
$H = \arccos( [\sin(-0.83) - \...
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