I believe  the rapture will happen when >>the last person<< chosen by GOD to be saved  accepts Jesus by his or her free will......  and that is why we cant know the exact date beforehand......
 
thus the date of the rapture has little to do with feast days, worldly events, numbers of this or that....etc.... We are promised to know the generation, the approximate time, but that is all....
 
Lewis  Brackett