Patent ID: 7721454
Filing Date: 2010-05-25
Classification: G04B

Abstract:
1. A celestial calendar device comprising: a stone base; a north-south block integral to said stone base; a raised north-south alignment plane formed as an edge of said north-south block; an equinox line formed from said stone base and emanating from a bottom of said raised north-south alignment plane; an equinox line terminus abutting said bottom of said raised north-south alignment plane; an equinox line end opposite said equinox line terminus on said equinox line aligned for a solstice indication; a north shadow surface formed from said stone base adjacent a north side of said equinox line and abutting said bottom of said raised north-south alignment plane configured for a first type of solstice indication; a south shadow surface formed from said stone base adjacent a south side of said equinox line and abutting said bottom of said raised north-south alignment plane configured for said first type of solstice indication; a summer solstice sunrise corner point adjacent said south shadow surface and a south end of said raised north-south alignment plane; and a winter solstice sunrise corner point adjacent said south shadow surface and a south end of said raised north-south alignment plane.