Bruce and anyone else reading
Your timeline is wrong according to the bible.
Jesus says in Matthew 24:15-21 paraphrased by me
When you see the abom of desolation spoken of in Daniel flee.... pray your flight is not on the sabbath because then there will be a GREAT TRIBULATION
 
Daniel 12:11 says there will be 1290 days from the time the sacrifice is abolished and the abom of desolation is set up
 
therefore the 1290 comes first and the abom of des is set up and then the 1260 days or 42 months of rev 13:5
You are correct that the last week of years =2550 days, but it is from sept 29, 2008 until sept 23, 2015
 
Will Schumacher