A solar calendar is a calendar whose dates indicate the position of the earth on its revolution around the sun or equivalently the apparent position of the sun moving on the celestial sphere. ==Astronomy== The natural science of astronomy is the study of celestial objects, observations and phenomena in the night sky. The ancient discipline of astr... Found on http://en.wikipedia.org/wiki/Solar_calendar
any dating system based on the seasonal year of approximately 365 14 days, the time it takes the Earth to revolve once around the Sun. The Egyptians ... Found on http://www.britannica.com/eb/a-z/s/121