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Old December 3rd 17, 10:59 AM posted to sci.astro.amateur
Gerald Kelleher
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Default The Equation of Time(keeping)

It is coming up to Polar noon at the South pole -

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

The North and South poles are locations on Earth where daily rotation has reduced to zero from a maximum at the Equator rather than points on a 'tilting' Earth.

The same rotation that causes Polar noon and midnight in a few weeks also causes the natural variations in the noon cycle insofar as the uneven nature of this surface rotation is in response to the variable orbital speed of the Earth.