Equatorial Sundial

An equatorial sundial is a type of plane clock where the inclination of the clock plane is parallel to the plane of the earth's equator. In this case, the perpendicular gnomon aligns with the celestial polar axis. The shadow produced by the tip of the gnomon on the oblique clock plane is used to read the hour and the day.

This sundial has several unique characteristics:

	First, the curves of the calendar have simplified to circular arcs.

	Second, this clock type is independent of latitude, as the calendar curves do not depend on the latitude position of the sundial.

	Third, a double equatorial clock is sometimes used where two faces of the same clock plane are present.

NECESSARY PARAMETERS:

   DIMENSIONS.
   Longitude of the location
   Gnomon tip height

This sundial includes a calendar, and the proper corrections for longitude, the equation of time, and daylight savings time, in order to obtain the correct civil time.

The geometric dimensions of the clock used in the program are input in the screen DIMENSIONS