From Monday 2nd July the successful 24/7 opening of the J B Morrell Library will end for the summer vacation. 24/7 opening will resume on Monday 3rd September, from which point the Library will be open 24/7 all year round, except for 25th - 26th December and 1st January 2013.
Summer vacation opening hours are as follows:
Monday - Friday: 9am - 6pm (except Tuesdays: 9am - 9pm)
Saturday: 10am - 6pm
You can check the J B Morrell Library's opening hours here: http://www.york.ac.uk/library/libraries/opening-hours/