In addition to expanding the system, Metro expanded the operating hours over the first 40 years. Though it originally opened with weekday-only service from 6 a.m. to 8 p.m, financial paperwork assumed prior to opening that it would eventually operate from 5 a.m. to 1 a.m. seven days a week. It never operated exactly on that schedule but the hours did expand, sometimes beyond that. On September 25, 1978, Metro extended its weekday closing time from 8 p.m. to midnight and 5 days later it started Saturday service from 8 a.m. to Midnight. Metrorail kicked off Sunday service from 10 a.m. to 6 p.m. on September 2, 1979 and on June 29, 1986, the Sunday closing time was pushed back to midnight. Metro started opening at 5:30 a.m., a half an hour earlier, on weekdays starting on July 1, 1988. On November 5, 1999 weekend service was extended to 1:00 a.m., and on June 30, 2000 it was expanded to 2:00 a.m. On July 5, 2003 weekend hours were extended again with the system opening an hour earlier, at 7:00 a.m. and closing an hour later at 3:00 a.m. On September 27, 2004 Metro again pushed weekday opening time an hour earlier, this time to 5 a.m.