The draw of the bridge, mile 1.6 at Ocean Springs, shall open on signal; except that, from 9 p.m. to 5 a.m., the draw shall open on signal if at least eight hour notice is given; on Thanksgiving Day, Christmas Day and New Year's Day the draw shall open on signal if at least 12 hour notice is given; and the draw need not open to vessels from 6:30 a.m. to 8 a.m. and from 4 p.m. to 6 p.m. Monday through Friday, except federal holidays. The draw shall open anytime at the direction of the District Commander.