Interesting that US F1 is in November – ; my guess is weather (too hot to do it for a No. America swing for Canada) and it gives them time to finish the place!
Proposed 2012 Formula 1 calendar:
March 18 Australian GP March 25 Malaysian GP April 8 Chinese GP April 22 Indian GP May 13 Spanish GP May 27 Monaco GP June 10 Canada GP June 24 European GP July 8 British GP July 22 German GP July 29 Hungarian GP Sept. 2 Belgian GP Sept. 9 Italian GP Sept. 23 Singapore GP Oct. 7 Japanese GP Oct. 14 Korean GP Oct. 28 Abu Dhabi GP Nov. 4 Bahrain GP Nov. 18 US GP (Austin) Nov. 25 Brazilian GP