sothic cycle การใช้

• More recent research has eroded that confidence and questioned many of the assumptions used with the Sothic Cycle.
• :In ancient Egypt there was a period called a Sothic cycle which was comprised of four periods of 365 years each.
• 41.196.68.227-- The date " 4242 BC " was based on older calculations of the Sothic cycle.
• The heliacal rising of Sothis returned to the same point in the calendar every 1, 460 years ( a period called the " Sothic cycle " ).
• The best known of these is the Sothic cycle whose careful study led Richard Anthony Parker to argue that the dates of the Twelfth dynasty of Egypt could be fixed with absolute precision.
• It has been noticed, and the Sothic cycle confirms, that Sirius does not move retrograde across the sky like other stars, a phenomenon widely known as the precession of the equinox.
• In Egypt the star Sirius had significance since every 1460 years ( the Sothic cycle ) its heliacal rising ( just before sunrise ) marked the Egyptian new year and the inundation of the Nile.
• The calendar traditionally used in medieval Armenia was based on an invariant year length of 365 days . As a result, the correspondence between it and both the solar year and the Julian calendar slowly drifted over time, shifting across a year of the Julian calendar once in 1, 461 calendar years ( see Sothic cycle ).
• :: So ( summing up my recent learnings ), for the Sothic cycle, the significance is that the Egyptians ignored the extra quarter day per sidereal year, leading to lagging behind more and more until, 1460 of their years later, a full 1460 quarter days ( 365 ) had accumulated ( thus actually being 1461 years later ), landing them right back on-cycle with an otherwise V-Man737 13 : 58, 17 January 2007 ( UTC)