Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 18, 2017 15:05:16 GMT -5
9/17/2017
Sunrise: 6:47AM
Sunset: 7:03PM
Day Length: 12 Hours, 16 Minutes and 35 Seconds
|
|
|
|
Post by alex992 on Sept 18, 2017 16:05:21 GMT -5
Sunrise: 7:09 AM
Sunset: 7:23 PM
Solar Noon: 1:16 PM
Length of Day: 12 hrs 14 mins
Compared to June 20:
Sunrise: 6:29 AM
Sunset: 8:15 PM
Solar Noon: 1:22 PM
Length of Day: 13 hrs 46 mins
The difference isn't as staggering as somewhere at a higher latitude (obviously) but it's still very noticeable. Especially the earlier sunsets.
|
|
|
|
Post by alex992 on Sept 18, 2017 16:27:40 GMT -5
Just for shits and giggles, let me show a place at a very high latitude (Alert, Canada; at 82 degrees north)
Sunrise: 4:45 AM
Sunset: 7:24 PM
Solar Noon: 12:05 PM
Length of Day: 14 hr and 40 min
Light is visible for 24 hours a day still
Let's go ten days down the road (September 28) the values are:
Sunrise: 4:40 AM
Sunset: 3:13 PM
Length of Day: 10 hrs 32 min
Solar Noon: 9:56 AM (ridiculously early!)
By October 15, Alert has 24 hour darkness. So in 17 days, Alert loses 10.5 hours of daylight which corresponds to about 37 mins a day. Nuts! Alert spends about nine months of the year either in 24 hour daylight or 24 hour darkness.
|
|
|
|
Post by Lommaren on Sept 18, 2017 16:31:11 GMT -5
Nah on Sep 28 Alert's solar noon will still be around 12 am  I agree it's rather sensational though. The South and North Poles even nuttier. There you have civil twilight 24 hours a day for a few days after the midnight sun immediately snaps into polar night  |
|
|
|
Post by alex992 on Sept 18, 2017 16:34:23 GMT -5
^ Yeah I agree, the sunrise/sunset times for September 28 look a bit dubious. In reality the figures are probably about two hours later (sunrise at 6:40 AM and sunset at 5:13 PM)
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 19, 2017 11:27:07 GMT -5
9/19/2017
Sunrise: 6:47AM
Sunset: 7:02PM
Day Length: 12 Hours, 14 Minutes and 25 Minutes
Peak Sun Angle: 56.3°
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 20, 2017 11:15:11 GMT -5
9/20/2017
Sunrise: 6:48AM
Sunset: 7:00PM
Peak Sun Angle: 55.9°
Day Length: 12 Hours 12 Minutes and 15 Seconds
Last day when the sun sets past 7.
|
|
|
|
Post by alex992 on Sept 20, 2017 13:46:58 GMT -5
Rise: 7:10 AM
Sunset: 7:21 PM
Solar Noon: 1:15:30 PM
Peak Sun Angle: 64.7 degrees
Length of day: 12 hrs 11 mins
|
|
|
|
Post by boombo on Sept 20, 2017 17:31:00 GMT -5
21 Sept
Sunrise: 06:52
Sunset: 19:09
12 hours, 17 minutes
It's not until the 25th that we actually get 12-hour days (06:59-18:59).
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 21, 2017 11:02:59 GMT -5
September 21st, 2017
Sunrise: 6:49 am (89°)
Sunset: 6:59 pm (271°)
Day Length: 12:10:05
|
|
|
|
Post by boombo on Sept 22, 2017 6:37:43 GMT -5
I wanted this to go up somewhere for future reference but couldn't think of anywhere better to post it   You can see how the advantage light-wise in summer of being at a higher latitude slightly outweighs the disadvantage in winter, even just comparing between 50 and 60 latitude. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 22, 2017 9:55:07 GMT -5
9/22/2017 Autumn Equinox
The Sun set due west and rises due east.
Sunrise: 6:50AM
Sunset: 6:57PM
Day Length: 12 Hours 7 Minutes and 55 Seconds
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 24, 2017 13:17:03 GMT -5
9/24/2017
Sunrise: 6:51AM
Sunset: 6:55PM
Day Length: 12 Hours, 3 Minutes and 35 Seconds
|
|
|
|
Post by alex992 on Sept 24, 2017 21:32:28 GMT -5
Awesome chart! Would be cool to see all latitudes from the Equator to the North Pole. Sunrise: 7:11 AM Solar Noon: 1:13:30 PM Sunset: 7:16 PM Length of Day: 12 hrs 5 min Peak sun angle: 63.16 degrees That means the sun is directly over head at 0.74 degrees south, and below the horizon from 89.26 degrees north on northwards. |
|
|
|
Post by Hiromant on Sept 25, 2017 1:14:34 GMT -5
Sunrise: 7:11
Sunset: 19:11
Day length: 11 h 59 min 13 s
Highest sun angle: 29,7°
Darkness has officially taken over now, looking forward to some cold temps as well.
|
|
|
|
Post by alex992 on Sept 25, 2017 12:50:55 GMT -5
Sunrise: 7:12 AM
Solar Noon: 1:13:30 PM
Sunset: 7:15 PM
Length of Day: 12 hrs 3 min
Peak sun angle: 62.77 degrees
Yeah, yeah I know. Not much different from yesterday.
Looks like we're at the time of year where northern latitudes are starting to get shorter days than lower latitudes. Our first <12 hour day will be on Wednesday, September 27.
|
|
|
|
Post by Babu on Sept 25, 2017 12:59:22 GMT -5
I've gone from having the longest days to having the shortest days on city-data in a very short amount of time.
|
|
|
|
Post by alex992 on Sept 25, 2017 14:11:04 GMT -5
I've gone from having the longest days to having the shortest days on city-data in a very short amount of time. The consequence of being high latitude lol. It'd be interesting if we had a member from Alert or Eureka, Canada (at 82 N or 80 N respectively). Those places change more in a week around the equinoxes than I do throughout an entire year, lol. |
|
|
|
Post by alex992 on Sept 25, 2017 14:20:15 GMT -5
Actually since I made that post regarding Alert on September 18th, exactly a week ago, Alert has lost 2 hrs and 49 minutes of daylight or about 24 minutes a day and in the next week (On October 2nd), they'll lose another 2 hrs and 58 mins, which is 5 hrs and 47 min of daylight lost in two weeks!
|
|
|
|
Post by boombo on Sept 25, 2017 14:23:58 GMT -5
Certainly would! Unfortunately the selfish bastard I stole that chart from on one of the British forums years ago could only be bothered working it out for our latitudes  First pre-7 pm sunset today, first post-7 am sunrise tomorrow! I don't have to get up that early though, so sunrise times are still irrelevant to me at the moment. 26 September Sunrise: 07:01 Sunset: 18:57 11 hours, 56 minutes |
|
