On Feb 23, 4:41 pm, Sam Wormley <sworml...@gmail.com> wrote: > On 2/23/12 4:19 AM, oriel36 (who is astronomically illiterate) wrote: > > > Any star crosses a person's meridian 1461 times in 1461 days and the > > Egyptians used the orbital emergence of Sirius from behind the Sun as > > a gauge for the balance between days and years,or in modern > > terms,rotations and orbital circuits > > Bzzzt! Wrong again, Gerald. Any visible star crosses one's local > meridian at least once *every* sidereal day. Fifth graders can > show you how to measure that, > > Circumpolar stars cross one's local meridian twice each sidereal > day.
I assure you,within a 24 hour period and one rotation of the Earth a star will cross a person's meridian 1461 times in 1461 days unless you truly wish to believe that the alternative 366 day period from March1st 2011 until February 29th 2012 has significance in orbital terms .
A calmer mind would understand why Sirius acted as an orbital marker for the Egyptians as its orbital (heliacal) rising coincided with the flooding of the Nile.The extra day/rotation which follows 4 consecutive 365 day cycles is meant to indicate to reasonable people that daily and orbital motions are separate and the extra rotation of February 29th was the way the Egyptians formatted the 1461 day/4 year calendar cycle into a continuous stream of days,in dynamical terms it allows the orbital cycle of 365 1/4 days to drift through March 1st in non leap years and the 1/4 rotation's worth of orbital motion omitted each non leap year is picked up by the February 29th rotation.A society watching the appearance of a star so closely as Sirius was watched by the Egyptians and many other societies would have noticed that it heliacal rising did not happen after a continuous stream of 365 days nor did the flooding of the Nile but adding an extra day kept the flooding of the Nile fixed to the day when it was expected and to the same point in the seasons.
If you insist on an imbalance of 1465 rotations in 1461 days you are certainly going to lose the reasoning of the Egyptians in using the star's disappearance and its re-appearance as an orbital event when the orbital motion of the Earth places it behind the glare of the central Sun.The Egyptians actually tell you that they link the number of days to the helical rising of Sirius so it can only happen 1461 times for 4 orbital circuits -
"on account of the precession of the rising of the Divine Sothis (Sirius) by one day in the course of 4 years, and other festivals celebrated in the summer, in this country, shall not be celebrated in winter, as has occasionally occurred in past times, therefore it shall be, that the year of 360 days and the 5 days added to their end, so one day as feast of Benevolent Gods [the pharaoh and family] be from this day after every 4 years added to the 5 epagomenae before the New Year, whereby all men shall learn, that what was a little defective in the order as regards the seasons and the year, as also the opinions which are contained in the rules of the learned on the heavenly orbits, are now corrected and improved" Canopus Decree
Is the reasoning of the Egyptians and the present 1461 day calendar format so repulsive that you are willing to ignore that when Sirius disappears and appears it is due to the orbital motion of the Earth ?