I found this yesterday while purusing Jack Kelly's site, gracethrufaith.com
 
Seems like it would support a September rapture.  If Christ was born in September, perhaps the birth of the bride in heaven will happen at the same time?
 
http://www.gracethrufaith.com/selah/holidays-and-holy-days/the-christmas-story-part-1
Elizabeth was six months pregnant when Mary conceived. Since John the Baptist, Elizabeth's son, was born in March, a normal nine-month gestation period would place his conception in June. Elizabeth would have been six months into her pregnancy in late December, the time of Mary's conception, placing the Lord's birth in September, six months after John's. Read "Happy Birthday Jesus" for the Biblical support for this view