Greetings, fellow dialists,
An old shipmate asked me if the date of the start of winter at Scott's Hut in Antarctica in 1911 could be found. I at once thought of those wise people, the sundial group! He needs the sun's declination for any single date close to 20 April 1911. He knows the latitude of the hut and can easily work from there.

Seems he has found two declared dates for the onset of winter in that month in historical accounts and they don't agree. Presumably, disregarding small corrections for dip and refraction, winter starts when the sun's centre reaches no higher than the horizon. This is the value he wants.

The recent BBC programme on the conservation of Scott's Hut and its contents was very good.
Frank 55N 1W
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