Willy,
<>
A very useful fact for me to know, as I live at 53º 22’ North, quite close.
In fact, 5.9 miles from the junction of the A41 and M53.
Mike Shaw
53º 22'N 03º02'W
www.wiz.to/sundials
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Few people know that a north-facing sundial is useful.
They are quite surprised that the insolation time of a north-facing sundial in
summer (summer solstice) may be as long as the insolation time of a
south-facing sundial in winter (winter solstice).
This is the case at 53 ° 18 'N.
For example,
Dear All,
I am delighted that so many readers explored
the amusing problem of how long the sun can
fall on a north-facing wall.
I liked the diagrams that Roger and Helmut
prepared.
The different approaches led to much the same
answers, including Roger's once he had looked
at the correct side of
