Okla. Stat. tit. 41 § 61
Method for Computation of Time
Operative Text
The time within which an act is to be done, as provided for in Title 41 of the Oklahoma Statutes, shall be computed by excluding the first day and including the last day. If the last day is a legal holiday as defined by Section 82.1 of Title 25 of the Oklahoma Statutes, it shall be excluded. The provisions of this section are hereby declared to be a clarification of the law as it existed prior to the effective date of this act and shall not be considered or construed to be a change of the law as it existed prior to the effective date of this act. Any action or proceeding arising under Title 41 of the Oklahoma Statutes prior to the effective date of this act for which a determination of the period of time prescribed by this section is in question or has been in question due to the enactment of Section 20, Chapter 293, O.S.L. 1999, shall be governed by the method for computation of time as prescribed by this section.
Oklahoma's 41 O.S. § 61 establishes a standard method for counting days whenever a deadline or time period is set under Title 41 (the state's landlord-tenant law). Under this rule, the first day of a period is not counted, but the last day is — unless that last day falls on a legal holiday as defined by Oklahoma law, in which case it is also excluded. This section was enacted as a clarification of existing law rather than a change to it, meaning the same counting method applies to actions that arose before the provision's effective date.
Plain English — not legal advice.
Property owners and managers operating under Oklahoma's landlord-tenant statutes should apply the day-counting method in 41 O.S. § 61 whenever calculating notice periods, response windows, or other time-sensitive deadlines. A compliant operator generally starts counting the day after the triggering event and counts through to the final day, then checks whether that last day is a state-recognized legal holiday — if so, that day is skipped. Keeping a calendar that flags Oklahoma legal holidays helps ensure that notices and filings land within the correct window.
General guidance for property managers — not legal advice for your specific situation. Consult an attorney for advice on your case.
Under 41 O.S. § 61, tenants benefit from the same standardized day-counting rule when evaluating whether a landlord's notice was timely or whether a deadline for their own response has passed. Because the first day is excluded and legal holidays can push a deadline forward, a notice that appears to expire on a holiday may actually remain open one additional day. Tenants who believe a deadline was miscalculated under this provision can raise that issue as a defense in a proceeding, consult a local tenant-rights organization, or seek guidance from Oklahoma's legal aid resources.
General guidance for tenants — not legal advice for your specific situation. Consult a tenant-rights organization or attorney for advice on your case.
Generated October 18, 2026 — auto-generated, not yet human-reviewed. See /transparency for methodology.
Effective Timeline
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