the station was open twenty-four hours a day , and buddy worked the late shift , from 9 p.m. to 5 a.m. around eleven o'clock , moochie welch and sandy galton were apt to drop by in sandy 's old dented mustang ; richie trelawney might come by in his firebird ; and don , of course , was in and out almost all the time - when he was n't goofing off at school .