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Old 04-25-2014, 08:13 AM
 
1,690 posts, read 2,061,843 times
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Quote:
Originally Posted by divisionbyzero0 View Post
33 C (91 F) and drizzling, but sun still strong
In excel the solar elevation angle formula is:

=asin((cos("hours past or before solar noon" * 15 * 3.14/180) * cos(angle of declination * 3.14/180) * cos(latitude *3.14/180)) + sin(angle of declination * 3.14/180) * sin(latitude *3.14/180)))/(3.14/180)

Where solar time is adjusting the true clock time so that the highest angle of the sun is fixed to occur at exactly 12pm. Basically adjust the clock to force what times it would be if solar noon were to be the new 12pm on the clock. This time reading is what the hour angle is derived from.

Angle of declination is a measure of the calendar day. If the sun is directly over the Tropic of Cancer on northern hemisphere summer solstice, it measures 23.44 on 21 June. On equinox it's 0 on 20 March and 23 September, on northern hemisphere winter solstice it's -23.44 on 21 December. Currently 25 April it's about 13.1.

After you put all this together this excel formula will give you a very good approximation how high above the horizon the sun is at the afternoon time you are interested in testing. For morning just take how many hours before solar noon as it will be almost perfectly symmetric to the afternoon reading. "Close enough to it"

 
Old 04-25-2014, 08:54 AM
 
Location: Finland
24,128 posts, read 24,825,803 times
Reputation: 11103
This thread is going seriously asperger.
 
Old 04-25-2014, 10:26 AM
 
Location: Estonia
1,759 posts, read 1,880,389 times
Reputation: 1109
Sunrise: 5:39
Sunset: 21:01

Day length: 15 h 22 min
Highest sun angle: 44°

Last week has been blue dome skies, the next will be much cloudier. That's quite nice if it's as warm as 19°C though.
 
Old 04-25-2014, 11:43 AM
 
1,690 posts, read 2,061,843 times
Reputation: 993
Quote:
Originally Posted by Ariete View Post
This thread is going seriously asperger.
You don't think many of us in here are on the spectrum? I think it's time people saw that a brain can be well-rounded, can be fixed to certain areas of focus, or can be extremely focused in a narrow place. Sometimes the sharp focus area has extreme practical use and sometimes not. When it does, you have an inventor of something like a Bill Gates. When it doesn't, the person's life purpose is never made known. The drawback is a lack of skills in place of where the brain is less attended to through life.

In the best interest of the world is to channel the strength of any narrow-focuser as close as possible to a practical applied purpose for world progress. Almost always there exists one or more.

The more fixated a brain is in a specific topic area, the less likely that brain will cross over to social practicalities. Because of this condition, people have capacities that other people don't that build on human progress, but they aren't marketable and this is easily fixable with a little intervention. Otherwise, you are ignoring something of value to society on superficial grounds.

Think of the AS person as the k-cup without water and another person has who doesn't have what it takes to be a k-cup, has no problem finding hot water, can bring that k-cup to the Keurig and make sure the hot water is there because the k-cup isn't skilled at finding the hot water

Otherwise society is just saying the solution is no coffee

Then a lower functioning autistic is like a k-cup with no tools that we know of that can poke a hole in it

Last edited by EricS39; 04-25-2014 at 12:01 PM..
 
Old 04-25-2014, 01:59 PM
 
Location: Bremerhaven, NW Germany
2,714 posts, read 3,046,417 times
Reputation: 934
25th April- Twilight lasted until now, can still see a blueish tint on the northwestern sky. (almost 10 PM now here)

Astronomical Dawn: 03:30
Nautical Dawn: 04:33
Civil Dawn: 05:24
Sunrise: 06:03
Solar Noon: 13:24
Sunset: 20:44
Civil Dusk: 21:24
Nautical Dusk: 22:15
Astronomical Dusk: 23:19
Max sun angle: 49.6°
 
Old 04-25-2014, 04:52 PM
 
1,690 posts, read 2,061,843 times
Reputation: 993
You should have been able to see under a clear sky, some trace until 22:30 if skies are perfectly clear

22:00 is where it just starts to appear dark subconsciously
 
Old 04-25-2014, 05:33 PM
 
4,658 posts, read 3,660,811 times
Reputation: 1345
Pekanbaru, Indonesia, 26 Apr 2014

Astronomical Dawn/Dusk : 04:57 19:27
Nautical Dawn/Dusk : 05:22 19:02
Civil Dawn/Dusk : 05:47 18:37
Sunrise/set : 06:08 18:16
Daylength : 12h 07m 46s, yesterday + 02s
Solar noon : 12:12, 77,0° N
Distance : 1,50524 * 10^11 m
 
Old 04-25-2014, 07:49 PM
 
Location: London, UK
2,688 posts, read 6,567,719 times
Reputation: 1757
Quote:
Originally Posted by EricS39 View Post
You don't think many of us in here are on the spectrum? I think it's time people saw that a brain can be well-rounded, can be fixed to certain areas of focus, or can be extremely focused in a narrow place. Sometimes the sharp focus area has extreme practical use and sometimes not. When it does, you have an inventor of something like a Bill Gates. When it doesn't, the person's life purpose is never made known. The drawback is a lack of skills in place of where the brain is less attended to through life.

In the best interest of the world is to channel the strength of any narrow-focuser as close as possible to a practical applied purpose for world progress. Almost always there exists one or more.

The more fixated a brain is in a specific topic area, the less likely that brain will cross over to social practicalities. Because of this condition, people have capacities that other people don't that build on human progress, but they aren't marketable and this is easily fixable with a little intervention. Otherwise, you are ignoring something of value to society on superficial grounds.

Think of the AS person as the k-cup without water and another person has who doesn't have what it takes to be a k-cup, has no problem finding hot water, can bring that k-cup to the Keurig and make sure the hot water is there because the k-cup isn't skilled at finding the hot water

Otherwise society is just saying the solution is no coffee

Then a lower functioning autistic is like a k-cup with no tools that we know of that can poke a hole in it
You just confirmed Ariete's point
 
Old 04-26-2014, 12:55 AM
 
Location: North West Northern Ireland.
20,633 posts, read 23,890,394 times
Reputation: 3107
6am
8:54pm
 
Old 04-26-2014, 01:45 AM
 
Location: Trondheim, Norway - 63 N
3,600 posts, read 2,695,441 times
Reputation: 1872
We have now more than 16 hours day.
In the northernmost town on continental Norway, Hammerfest now has twilight rest of night so darkness is gone.

Trondheim 63 25 38 N
Nautical twilight ends 00:06 and starts again 02:25
Civil twilight 04:13
Sunrise 05:13
Solar Noon: 13:16, altitude 40.2 Degr
Sunset 21:21
Civil twilight 22:23
Nautical twilight 00:17
Astronomical twilight rest of night

Hammerfest 70 40 N
Civil twilight rest of night
Sunrise 03:17
Solar noon 12:23
Sunset 21:33
Civil twilight rest of night

Last edited by Jakobsli; 04-26-2014 at 02:18 AM..
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