Need help with a calendar question

I realize this is not much of blog post but I have been looking for awhile and can not find out what something means in the Rigpaa calendar. On page 91 of the current Rigpa calendar (2009-2010) Friday the 15th (Tibetan 11th month, 30th day) it says “Night when the fates of those to die in the coming year are decided.” I can’t find any information on what this means, other than the obvious or where it comes from. I have emailed Rigpa in Europe and didn’t receive a reply so I am hoping that a MF1B reader knows this answer. If you do I will post your answer here to share.