Thursday, May 30 is Ascension Day. As a result, Campus Hasselt and Campus Diepenbeek are closed for ALL activities from Thursday, May 30 till Sunday, June 2. So you won't be able to visit the campus library in Diepenbeek during Ascension weekend.
Law Library Limburg, however, is only closed on Thursday, May 30. On Friday, May 31 and on Saturday, June 1 the library is open from 9am till 5pm.