|
|
Post by alex992 on Jul 27, 2019 11:48:02 GMT -5
Today is the last day where the sun peaks at 70+ degrees for the year here, so I thought it'd be interesting to see how long each of us spend above certain thresholds of peak sun angle.
My location; 38.97 N latitude
At 90 degrees: Never
Above 80 degrees: Never
Above 70 degrees: 72 days (May 16 - July 27; peaks at roughly 74.5 degrees in mid-late June)
Above 60 degrees: 134 days (April 13 - August 29)
Above 50 degrees: 190 days (March 18 - September 24)
Above 40 degrees: 242 days (February 20 - October 20)
Above 30 degrees: 313 days (January 16 - November 25; lowest is 27.5 degrees in mid-late December)
Above 20 degrees: All year round
Above 10 degrees: All year round
Above 0 degrees: All year round
Below 0 degrees: All year round
|
|
|
|
Post by Hiromant on Jul 27, 2019 12:02:39 GMT -5
60+° - never 50+° - 71 days (May 17 - July 26, highest is 54,1°) 40+° - 138 days (April 14 - August 29) 30+° - 190 days (March 19 - September 24) 20+° - 243 days (February 21 - October 21) 10+° - 313 days (January 17 - November 25, lowest is 7,3°) 0+° - year round
Almost the same durations as yours if you subtract 20°.
|
|
|
|
Post by Babu on Jul 27, 2019 12:11:50 GMT -5
More interesting if you count hours  |
|
|
|
Post by Steelernation on Jul 27, 2019 12:12:09 GMT -5
Rochester is at 43 N.
Above 90: 0
Above 80: 0
Above 70: 19 (June 11-30)
Above 60: 115 (April 25-August 17)
Above 50: 170 (March 29-Sept 14)
Above 40: 222 (March 3-October 10)
Above 30: 281 (February 2-Nov 9)
Above 20: 365
Above 10: 365
Above 0: 365
Peak: 70.3 (June 18-24)
Min: 23.4 (December 21-22)
|
|
|
|
Post by alex992 on Jul 27, 2019 12:15:11 GMT -5
60+° - never 50+° - 71 days (May 17 - July 26, highest is 54,1°) 40+° - 138 days (April 14 - August 29) 30+° - 190 days (March 19 - September 24) 20+° - 243 days (February 21 - October 21) 10+° - 313 days (January 17 - November 25, lowest is 7,3°) 0+° - year round
Almost the same durations as yours if you subtract 20°.
Nice, makes sense. I'm almost exactly at 39 N while you're almost exactly at 59 N. |
|
|
|
Post by Cadeau on Jul 27, 2019 12:16:20 GMT -5
Paris
At 90°: Never
Above 80°: Never
Above 70°: Never
Above 60°: 75 days (15 May~28 Jul)
Above 50°: 140 days (13 Apr~30 Aug)
Above 40°: 192 days (18 Mar~25 Sep)
Above 30°: 246 days (19 Feb~22 Oct)
Above 20°: 317 days (15 Jan~27 Nov; lowest is 17.7°)
Above 10°: All year round
Above 0°: All year round
Below 0°: All year round
|
|
|
|
Post by Crunch41 on Jul 27, 2019 12:37:38 GMT -5
Rochester is at 43 N. Above 90: 0 Above 80: 0 Above 70: 19 (June 11-30) Above 60: 115 (April 25-August 17) Above 50: 170 (March 29-Sept 14) Above 40: 222 (March 3-October 10) Above 30: 281 (February 2-Nov 9) Above 20: 365 Above 10: 365 Above 0: 365 Peak: 70.3 (June 18-24) Min: 23.4 (December 21-22) Milwaukee is also at 43N, so these are my numbers too. |
|
|
|
Post by P London on Jul 27, 2019 14:31:56 GMT -5
You geeky fucks how am I suppose to know what sun angle is what. Tf...
Nerds.
|
|
|
|
Post by nei on Jul 27, 2019 14:46:14 GMT -5
More interesting if you count hours yea, kinda misleading; I'd rather post hours. You're not spending most of the day at peak sun angle |
|
|
|
Post by alex992 on Jul 27, 2019 16:35:43 GMT -5
You geeky fucks how am I suppose to know what sun angle is what. Tf... Nerds. It's not that hard to look up....many websites that will tell you that information. |
|
|
|
Post by Crunch41 on Jul 27, 2019 20:29:22 GMT -5
More interesting if you count hours yea, kinda misleading; I'd rather post hours. You're not spending most of the day at peak sun angle Is there a web site to look up this number?
|
|
|
|
Post by alex992 on Jul 27, 2019 20:32:52 GMT -5
yea, kinda misleading; I'd rather post hours. You're not spending most of the day at peak sun angle Is there a web site to look up this number?
this website gives you the sun angle to the exact minute, also has the sun angles by hour. I'd list how many hours if I wasn't such a lazy lol. |
|
|
|
Post by Crunch41 on Jul 27, 2019 21:47:03 GMT -5
I think I found a site that will work for minutes above a certain angle. Here is the site, I used the daily calculation sheet. www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html. This is easy to modify to make it calculate every minute for a year, then use formulas to count the minutes above each angle. It's not 100% exact due to leap years but it's close enough. This method looks easier than understanding the equations behind it. Edit: I tried the daily spreadsheet for January 1st in Milwaukee, and it was about 10 minutes different from the calculator on their own website. Why? I don't think I did anything wrong.
I put 43.05N, 87.95W for Milwaukee. The daily spreadsheet has the sun angle reach 0 degrees at 7:33 and drop below at 16:35. The spreadsheet also says sunrise was at 7:31 and sunset 16:35. I understand the slight difference here, because the sun takes up about 0.5 degrees of the sky, so sunrise and sunset could be measured at -0.5 degrees.
But these numbers are 8 to 10 minutes too late. Any ideas? The new calculator from the website (https://www.esrl.noaa.gov/gmd/grad/solcalc/index.html) says sunrise is 07:23 and sunset 16:28.
The old calculator has the exact same reading as the new calculator. www.esrl.noaa.gov/gmd/grad/solcalc/sunrise.html TimeAndDate.com says 07:23 to 16:27: www.timeanddate.com/sun/usa/milwaukee?month=1&year=2019
Edit 2: I downloaded the spreadsheet again and got 07:23 to 16:27 for sunrise and sunset, and the sun goes above 0 degrees at 07:25 and 16:26. So it's not the spreadsheet, it's something I did with my formulas. That's good.
|
|
|
|
Post by nei on Jul 28, 2019 18:09:36 GMT -5
here's from somewhat simplified equations. In days, but in total time year-around above angle X. For 42°
Above 0°: 182.5 days [duh, because the average day length is 12 hours, sun is up only half the time of the year]
Above 10°: 152.5
Above 20°: 120.2
Above 30°: 80.9
Above 40°: 53.5
Above 50°: 32.1
Above 60°: 15.0
Above 70°: 1.7
Above 80°: 0
by peak angle, will be almost exactly the same as 43°, which has been posted already
|
|
|
|
Post by Morningrise on Aug 1, 2019 12:30:11 GMT -5
Saskatoon (52°N):
90°: Never
Above 80°: Never
Above 70°: Never
Above 60°: 40 days (June 1st through July 10th, highest angle is 61.3° from June 17th to 24th)
Above 50°: 121 days (April 22nd through August 20th)
Above 40°: 176 days (March 26th through September 17th)
Above 30°: 228 days (February 28th through October 13th)
Above 20°: 288 days (January 29th through November 12th)
Above 10°: All year round (lowest angle is 14.5° from December 18th to 25th)
Above 0°: All year round
|
|
|
|
Post by Crunch41 on Aug 7, 2019 17:52:06 GMT -5
I think I found a site that will work for minutes above a certain angle. Here is the site, I used the daily calculation sheet. www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html. This is easy to modify to make it calculate every minute for a year, then use formulas to count the minutes above each angle. It's not 100% exact due to leap years but it's close enough. This method looks easier than understanding the equations behind it. Milwaukee 43.05N 87.95W
>0 185.0 days
>10 153.1 days
>20 119.8 days
>30 80.6 days
>40 53.2 days
>50 31.4 days
>60 13.9 days
>70 0.4 days (10 hours 41 minutes)
Peak: 70.4
This spreadsheet calculates atmospheric refraction that adds a few minutes of sun each day.
|
|
|
|
Post by Crunch41 on Aug 7, 2019 18:24:48 GMT -5
0 degrees North, 0 degrees East:
>0 183.7 days
>10 161.5 days
>20 140.2 days
>30 118.8 days
>40 97.1 days
>50 74.8 days
>60 50.9 days
>70 20.1 days
>80 4.6 days
>85 1.1 days (26.9 hours)
Peak: 89.86
In theory, the peak is 90, but I think a perfect 90 degree sun angle requires the equinox to happen at solar noon. At the equator, the peak months for sun angle are March and September, and the lowest angles are June and December.
Knivskjellodden (71.1856N 25.6817E) Northernmost part of Norway, not counting Svalbard.
>0 188.8 days
>10 117.4 days
>20 70.9 days
>30 35.1 days
>40 5.9 days
Peak: 42.27
It has a few more days of >0 than the equator, but drops off quickly and the sun does not rise for a while in winter.
I can do other places. The calculator says it's not as accurate above 72N/below 72S, but it still gives numbers.
|
|
|
|
Post by nei on Aug 7, 2019 19:31:33 GMT -5
I think I found a site that will work for minutes above a certain angle. Here is the site, I used the daily calculation sheet. www.esrl.noaa.gov/gmd/grad/solcalc/calcdetails.html. This is easy to modify to make it calculate every minute for a year, then use formulas to count the minutes above each angle. It's not 100% exact due to leap years but it's close enough. This method looks easier than understanding the equations behind it. Milwaukee 43.05N 87.95W >0 185.0 days
>10 153.1 days
>20 119.8 days
>30 80.6 days
>40 53.2 days
>50 31.4 days
>60 13.9 days
>70 0.4 days (10 hours 41 minutes)
Peak: 70.4 This spreadsheet calculates atmospheric refraction that adds a few minutes of sun each day.
looks close to the numbers I posted; so my little script checks out. There's a 2.5 day difference for time of total sunlight; probably from not counting refraction. |
|
|
|
Post by nei on Aug 7, 2019 19:38:46 GMT -5
here's 63.825° (Umeå) Babu Days Above 0° 182.50 days 10 120.59 20 79.85 30 47.72 40 21.28 50 0.00 |
|
|
|
Post by nei on Aug 7, 2019 19:49:05 GMT -5
Raleight (35.5°) Yahya Sinwar Days Above 0 182.50 10 155.67 20 127.81 30 95.66 40 62.19 50 39.53 60 21.79 70 8.08 |
|
Lived:
Residence:
