Updated last on - planetary storm : 2 eb : day 249 of organic spring equinox year - © 2012 Raah Sirus

 Saros cycle of 18.03 years   18.03 x 365.2424 = 6585.3632 days (or 18 years + 11 days)   18 circles (arranged around center in ratio 6:12) 11 spheres (contained within 19th central circle ) The Saros cycle keeps track of the pattern of eclipses over a period of roughly 6585.36 days or 18.03 years. It is able to do this because after that amount of time 3 of the lunar cycles resynchronize (varying by 0.22 days):   242 draconic cycles = 242 x 27.21222 = 6585.36 239 elliptical cycles = 239 x 27.55455 = 6585.54 223 synodic cycled = 223 x 29.53059 = 6585.32   242 x 27.21222 = 6585.35724 days *(to 5 decimal places) As the Saros cycle lasts 0.35724 days longer (measurement based on the draconic/nodical cycle) than 6585 whole days, the occurrence of the next eclipse will be (360 degree x 0.35724) = 128.6 degrees west (roughly) of the previous one.   Also within the Saros is a sub cycle pattern for Eclipses called the Eclipse year 19 x 346.62 = 6585.78 days   example below is of 2 eclipses ~ 1 Saros cycle apart (or 6585 whole days) *visible sky is at midday over Edinburgh on the day of the eclipse ~ that's why the Moon isn't totally aligned with Sun 13-14 Nov 2012 @ 22:11:38 (5 Ik/6 Akbal~ 13 Moon/1 Dog) Longitude = 161.29 W link for NASA's page for this eclipse:- TSE2012   25 Nov 2030 @ 06:49:59 (13 Lamat ~ 4 Monkey) Longitude = 71.33 E link for NASA's page on this eclipse:- TSE2030 ~:~ (180 - 161.29 = 18.71) (180 - 71.33 = 108.67) ~:~ 18.71 + 108.67 = 127.38 degrees shifted {1.22 degrees from approximate of 128.6} ~:~ 1440 minutes per day 360 degrees around equator 1440 / 360 = 4 4 x 1.22 = 4.88 minutes off ~:~ or actually using this answer... 127.38 / 360 = 0.3538333... + 6585 = 6585.3538333... / 242 = 27.212206 days = average length of draconic/nodical cycle between 2012-2030   interesting external link: eclipse-geometry   p.s. (updated 2012) In addition going back 6585 days from the eclipse of 13-14 Nov 2012 we reach the date of:- 3rd Nov 1994 @ 13:39:03 (11 Caban ~ 11 Moon) Latitude = 34.22 W (161.29 - 34.22 = 127.07 degrees shifted) This is 8 days before my brother Ormungandr created The Torch of Life ~ on 11/11/1994 (6 Chicchan ~ 6 Earth) (Which was also when the A.S.P. count began, today :- 22/11/2012 -: it is 6585 days (1 Saros) since that date)   here is his website for more info:- Torch of Life In lak'ech Ra:ah