Just to let you know, there is another view on when the Day of Atonement was according to the biblical reckoning.  Last month!
 
Answers To Objections To The Biblical Calendar Based on the Aviv Barley
http://www.escapeallthesethings.com/biblical-calendar-aviv-barley.htm
Kind Regards,

Tim McHyde
http://www.EscapeAllTheseThings.com
Sharing the Plainterpretation of Bible Prophecy since 2000