On Wednesday, March 23, 2016 at 9:44:21 AM UTC, wrote:
On Wednesday, March 23, 2016 at 9:09:54 AM UTC, oriel36 wrote:

The issue is what is the dynamic behind the polar sunrise and 6 months later polar sunset at the same location. The answer is and always will be that as the Earth travels around the Sun those polar points turn parallel to the orbital plane and to the central Sun.

This issue is one a 12 year old child can grasp, and the answer is in every textbook. But for some reason you are unable to understand simple orbital motion, and persist in creating wildly inconsistent views of what is really straightforward:


Polar sunrise like daily sunrise is due to a rotation as the Sun comes into view . I can talk all day long about this wonderful annual event at either poles but it still requires people to stitch together a narrative using actual observations from the surface of the Earth -

https://www.youtube.com/watch?v=okw6Mu3mxdM

Lessons learned from dual surface rotations observed from other planets and specifically Uranus -

https://www.youtube.com/watch?v=612gSZsplpE

While the polar day/night cycle exists in splendid isolation at the North and South polar latitudes, where it mixes with daily rotation we get the seasons and it spreads out into terrestrial sciences in all sorts of ways.

Instead of having poles jutting out of the polar points, people have to consider that they represent a window in the the surface rotation as a component of the Earth orbital motion around the Sun. This is not like any other era where a person meekly presents observations for academics to approve or disapprove and waits a century for people to die before it is accepted, this is the 21st century where anyone can easily enjoy the dual sunrises and sunsets within a day that happens twice a year at either Equinox.