我查了今年他们的deadline Round Application Notification Round 1 October 6, 2009 December 17, 2009 Round 2 November 12, 2009 February 16, 2010 Round 3*# January 12, 2010 March 23, 2010 Round 4# March 30, 2010 May 6, 2010
I applied the third round last year and interviewed in March. Cornell usually took a while to get back to you, so you need to be mentally prepared when apply in later rounds. However, It is true that it is better to apply early but at the same time you don't want to underprepare your application and interview just for that reason. If you have strong credential, later round still works.