A twenty day notice to vacate doesn’t necessarily mean that the tenant has to be out in twenty days?

Notice can’t be given at any point of the month requiring the tenant to vacate in 20 calendar days – if rent is due on the first, notice cannot be given on the 15^th for the tenant to be out by the 5^th of the following month. 

The notice to vacate must be received at least twenty days before the end of the rental period.  This means that if the tenant is on a lease, notice must be received by the tenant at least 20 days before the last day of the lease agreement.  If the tenant is on a month-to-month rental agreement, the notice must be received at least twenty days before the end of the month