That's the number of days until the 1940 Census is released. And I can hardly wait! For one thing, the Census asked everyone 5 and older where they were living on April 1, 1935, filling in some blanks for where my ancestors were living between the 1930 and 1940 Census periods.
The 1940 Census will include a special series of questions--more data! In addition, there will be extra info about housing, although Dr. Weintraub (see comment below) says this is unlikely to be released for individuals.
Looking forward to April 2, 2012! But first, happy 2011.