Thursday, May 12th, 2011 falls 120 day after January 12th, 2011.
Adding 120 days to January 28, 2011 gives May 28, 2011.
Adding 120 days to January 27, 2011 gives May 27, 2011.
Tuesday, January 3rd, 2012 is 120 days after September 5th, 2011.
January 20, 2012
Thursday, January 27, 2011 is 120 days after September 29 2010.
January 17 + 120 days = May 17 (except in a leap year).
Adding 120 days to March 3, 2011 gives July 1, 2011.
Adding 120 days to March 16, 2011 gives July 14, 2011.
Adding 120 days after March 24, 2011 gives July 22, 2011.
Adding 120 days to April 4, 2011 gives August 2, 2011.
Adding 120 days to June 13, 2011 gives December 10, 2011.
Adding 120 days to January 9, 2012 gives May 8, 2012.