Summer hours for the Boulder campus will be 7:30 a.m. to 4:30 p.m., effective Thursday, May 10, through Sunday, Aug. 19. Please note: May 10 is the day of spring commencement. An early arrival is recommended due to the unusually high volume of traffic, both on campus and on surrounding city streets. On Monday, Aug. 20, the Boulder campus will return to its regular operating hours of 8 a.m. to 5 p.m. Some departments maintain their own unique hours of operation. Please follow your department's schedule.