2008 Feast Dates & 1260 days

According to the hebcal.com Calendar for Jewish fall feast days in 2008, the Feast of Trumpets falls on 9/30/08, so the evening before they start that day on our 9/29/08.   From our blessed hope day of May 5, 2005, counting the days until 9/29/08, we get 1243 days.  To convert to 360-day prophetic year numbers, we multiply the 1243 X 365.2422  = 453,996.0546, then divide by the 360 days = 1,261.10, one day outside of the 1260 days of judgment.    The other fall feast days do not fall near this number, when calculated from May 5, 2005.
      If we look for the rapture instead on Pentecost 5/15/05, then
the only  feast day that comes near this number of 1260  in 2008, is Attonement  (Yom Kippur), which falls that year on 10/9/08, or the evening before, being 10/8/08.  Counting the days from May 15, 2005 until October 8, 2008 = 1,242 days, converted to 360-day prophetic year then would be 1242 X 365.2422 = 453,630.812, then divide again by 360 = 1,260.08, VERY CLOSE TO THE NUMBER OF JUDGMENT DAYS; i.e., 1260 days

What I do not know or understand, is that the Jewish holidays this year are about a month later than our Christian holidays, from which we are counting.    But the hebcal.com calendar which I used for the dates of the feasts in 2008, is the calendar which shows their Passover this year on April 24.   If we figured the above calculations starting from their April - June Passover-until-Pentecost dates this year, then we could not come up with anything near the 1260 days between their feasts this year, and their feast dates in 2008....
      Maybe someone out there can help me out on this, as I am getting in over my head, and will exit left now.........
      May you all be blessed this day and after......Arlene