The parks and recreation areas shall be open for use between the hours of 9:00 a.m. and one-half hour after sunset, provided that the closing time may be extended until 11:00 p.m. where there is supervision in a manner and by persons approved by the Department of Parks and Recreation. No person shall use the parks or recreation areas between 11:00 p.m. and 9:00 a.m. of the following day.
(1979 Code Sec. 13.36.060)