I'm in Florida with a tenant in a verbal agreement. Rent is due the 12th of each month. Now I've read that in a verbal agreement the rental period is determined by the rent due date. However, my tenant moved in on the 1st of the month. So if in the case of an eviction, could I prove the rental period is from the 1st to the 31st by stating the 12 day period is just a grace period?