Show calendar mans record of the pasting passing of time the calendar was brought about aboul by evolution it has been regulated by mathematics and astronomy it il has been compounded of su superset super sti lions of re religious rites it has pro evoked some of the great dramatic dramata 4 situations of history relates sey mour korman in the chicago trill une line the reckoning of time is as old as histo y itself primitive mar map noted the new moon watched it i wax and wane again he knew the moods of the seasons there was cold and warmth and he sensed they came at regular intervals the ancient egyptians calculated time from the rising of the nile in mid june the north american in deans reckoned a journey in so many sleeps the incas of peru erected cylindrical pillars and estimated sol soi slices by measuring the suns shadow the theory of this stone and shadow reckoning is familiar in the sun dial civilizations such as the mayan the scandinavian and the babylonian had distinctive calendars many thousands of years ago in classical greece nearly every large city had its own calendar the calendar depends on the sun the moon the earth and a star the rotation of the earth around the sun gives the year the rotation of the moon around the earth gives the month the spin of the earth on its axis defines the d day ay the position of a star in the heavens gives the starting point from which to measure the year all of the celestial motions are chronologically independent there never can be an exact number of full days in any lunar month or solar year nor can there be an exact number of lunar months in the solar year |