The sundial itself doesn't really change day to day, or even year to year. They are generally fixed to the Earth and are not, in general, portable. The shadow cast by the "gnomon" (the pointer of the sundial) does move moment by moment throughout the day, and slightly from day to day.
A sundial has to be positioned correctly in order to give you a good estimate of the time.
I have a sundial in the garden.The sundial were the earliest form of clocks.
He used a portable sundial.
The answer depends on what is wrog with the sundial.
The pin of a sundial is called a gnomon. It is the part of the sundial that casts a shadow onto the dial face to indicate the time.
No, but it does not recognize daylight savings time which is a man-created concept.
Theodosius of Bithynia invented the sundial.
The vertical pointer on a sundial is the gnomon.
The pointer on a sundial is called a gnomon. It casts a shadow on the sundial face to indicate the time.
the shadow of the sundial is just called a shadow
The raised arm of a sundial that indicates the time of day by its shadow is the gnomon (NO-mon). A sundial has but one arm, what do you mean by secondary arm?
gnomon