Gerald Kelleher wrote:
There is a day/night cycle provided by the reflected light of the moon
within the polar day/night cycle provided by the orbital surface rotation.

http://www.usap.gov/videoclipsandmaps/spwebcam.cfm

In a few weeks it will return to darkness once more for the last time as
polar dawn begins to appear at the South pole with the Sun appearing for
the first time since March.

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

This is all going to be expanded on and worked out in detail.



Thank you for posting another video showing how the pole rotates.