I'm not sure. Let's say I have a record where the admission date = 12/1/1995 and the discharge date = 2/15/1996 (this is a long-term hospital). My crosstab dates are, for each month, 7/1/1995 through 6/30/1996.
The crosstab would indicate "1" for Dec, Jan, and Feb. The other months would be "0".