the flood happens once, not twice in 7000 years. Anyway mark your calendars, at least to compare with other important events, should the Judgment day period doesn't start this month. I will be very glad if the rapture and judgment day start on May 21st, but I am not so sure.
Harold Camping website http://www.familyradio.com/index2.html
"Amazingly,  May 21, 2011 is the 17th day of the 2nd month of the Biblical calendar of our day.  Remember, the flood waters also began on the 17th day of the 2nd month, in the year 4990 B.C." 
" We learn from the Bible that Holy God plans to rescue about 200 million  people (that is about 3% of today’s population).  On the first day of  the Day of Judgment (May 21, 2011) they will be caught up (raptured)  into Heaven because God had great mercy for them."
 
