The below is from Charlie Garrett's Web site where he discusses the 14,000-day theory: http://wonderful1.com/wst_page3.html.

Also, I discovered the number 720720 is divisible by 234 (the odd amount of change -- $2.34 -- the angel gave Vincent Tan in 1993)!  It is also divisible by the significant biblical numbers 7, 360, and 2520.
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If you go from the supposed time of AD32 for Christ's passion week, that would make the day the Holy Spirit was poured out on the first Pentecost on 2 Jun 32 - see Acts 2:1.  Once again - putting this day into the computer and adding 720720 days(exactly 2002 Hebrew years,) you come up to 4 September 2005.  This is the first day of the month Elul and exactly 30 days prior to Rosh Hoshanna!  This is significant because during this month the Shofar (trumpet) is blown every day except the Sabbath (Saturday) and the last day of the month.  This month is basically a call to repentance before the "Days of Awe" which could be a picture of the coming tribulation.  It's interesting that the last day when they don't blow the shofar closely resembles the verse in Revelation 8:1:   When he opened the seventh seal, there was silence in heaven for about half an hour.   Basically, it seems like a quite time of preparation for what is to come.  Now, read the following passage from 1 Corinthians remembering that this is ALL speculation: Listen, I tell you a mystery:  We will not all sleep, but we will all be changed-- in a flash, in the twinkling of an eye, at the last trumpet.  For the trumpet will sound, the dead will be raised imperishable, and we will be changed (1 Corinthians 15:51-52).

I've heard a million possibilities for what "the last trumpet" means.  Could it mean the last trumpet on Rosh Hoshanna coming at the end of the month Elul??  I don't know, and I just thought the 720720day interval was too unusual to pass up!

One other neat characteristic of the number 720,720 is that it is the least common multiple of the number 1 to 16.  In other words, it is the lowest number that can be evenly divided by the numbers 1,2,3,4,5,6,7,8,9,10,11,12, 13,14,15,16.