1. Five-day notices for non-payment of rent
2. Ten-day notices for non-compliance with the lease
3. Thirty-day notices to terminate a month-to-month tenancy, etc.
Normally a contract should include how one is to calculate the days required for an act. In the absence of the parties’ agreement, the applicable statute should dictate the method of calculating time. For example, the Arizona Residential Landlord and Tenants Act sets forth how to terminate a month-to-month tenancy at ARS Section 33-1375(b) it states:
B. The landlord or the tenant may terminate a month-to-month tenancy by a written notice given to the other at least thirty days prior to the periodic rental date specified in the notice. ARS Section 1-243 regarding the computation of time in statutes is also helpful:
A. Except as provided in subsection B, the time in which an act is required to be done shall be computed by excluding the first day and including the last day, unless the last day is a holiday, and then it is also excluded.
For example, if one wanted to terminate a month-to-month lease on October 1st, the thirty day notice should be sent before September 1, because the day the notice is deposited into the mail is excluded. The notice must be received thirty days before October 1st. So if it is mailed on or before the last day of August, the lease will end October 1st.
For purposes of the Landlord and Tenant Act, computing the time for notices includes weekdays and holidays.