Our opening hours We are looking forward to your visit!Please note that masks will be mandatory in all free access areas of the university. Opening hours Spring Semester 2021 starting 01.02.2021 Mon - Fri 8 a.m. - 7 p.m. Sat 9 a.m. - 4 p.m. Closing Dates Spring Semester 2021 Ascension Day Thu, 13 May 2021 Pentecost Mon, 24 May 2021 Dies Academicus Sat, 29 May 2021 On the other days, the library is open as usual.