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Old December 9th 18, 09:47 PM posted to sci.astro.amateur
Gerald Kelleher
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Default sundial at South Pole

It is lovely to see one cycle of rotation fit inside a larger Polar day/night cycle as the shadow turn through a full 360 degrees -

https://www.youtube.com/watch?v=pnuLTeHB3yU

Who would call themselves an astronomer and not notice.