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Sundial is a home made object use as a clock using the shadow
. . . cast by the sun that indicate the time of the day, in some
.. . . extent the day and the month of the year.
Earth rotates around its axis 24 hours in a day
It seems that the sun is the one rotating around the earth.
The sun is seems to rotate around the earth’s axis.
Make a sun dial or make the axis of sun dial parallel to the axis of the earth.

why not put this question in Math

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