In any given year, the date 100 days before February 1 is October 24 of the previous year.
The 29th of October 2011.
February 14, 2010 + 100 days = May 25, 2010.
Adding 100 days to February 14, 2009 gives May 25, 2009.
100 days after Feb. 1 is May 11 in leap years and May 12 in regular years.
Monday the 25th of October 2010 is 100 days before it. Friday the 13th of May 2011 is 100 days after it.
100 days before June 24th 2011 will be Wednesday, March 16, 2011.
Friday, November 25th, 2011 was 100 days before March 4th, 2012.
As of today's date, August 17, 2010, there are 257 days until May 1, 2011.
100 days before Monday, May 3rd, 2010 = Saturday, January 23, 2010.
The 5th of November 2011.
December 26, 2011
Subtracting 100 days from May 7, 2011 gives January 27, 2011.