Guidelines are given for expanding library hours so that disadvantaged adults may use library facilities and services on nights and weekends. There are discussions of cost, staffing, security problems, and publicity. Shifting library, bookmobile, and special programs to different hours; moving some programs outside the library; and special activities for Saturdays, Sundays, and weekends are also suggested. Some actual library programs that take place Sunday afternoon in a Black church, Friday night in a rural co-op and after school in a disadvantaged area are described. A list of practical recommendations is included. (LS)