Except as otherwise provided in this section, the hours during which parking is restricted in a Residential Permit Parking Program Area are 7 a.m. to 7 p.m., weekdays only. The Executive Director may adjust these hours or days if the Director determines that the adjustment is required to prevent parking congestion. For the purpose of this determination, the levels specified in § 10-15 {“Criteria for further consideration”} for overall parking utilization (80%) and nonresident utilization (25%) must be used. City Code, 1976/83, art. 31, §156(d)(parts) Ord. 79-999 Ord. 79-1193 Ord. 80-142 Ord. 83-1120 Ord. 85-483 Ord. 86-641 Ord. 91-703 Ord. 91-760 Ord. 92-109 Ord. 92-114 Ord. 92-115 Ord. 93-193 Ord. 05-118 Ord. 06-316 Ord. 09-217