Original Message:
Late attempt to rescind (cancel) contract... (by KC):
If the contract was executed in Florida (one of only 3 states with a rescission period as long as 10 days, along with Tennessee and one other state), it's 10 calendar days. In essence, weekend days count. Day 1 is the first day after contract execution. Even if there is a holiday exception, poster may still be past his rescission deadline. In most states, it's 5-7 days to rescind and in a few states, only 3 days.
An effort should still be undertaken immediately to submit a written rescission (cancellation) attempt. Poster might just get lucky...