If the due date for any return or other report or payment falls on Saturday, Sunday or a Holiday, the due date shall be considered to be the next business day.
Okla. Admin. Code § 710:90-3-18
If the due date for any return or other report or payment falls on Saturday, Sunday or a Holiday, the due date shall be considered to be the next business day.
Okla. Admin. Code § 710:90-3-18