News Closing for Class Day and Commencement June 1, 2018 Pamela Patton June, from the Très Riches Heures du Duc du Berry (Chantilly, Musée Condé, 65/1284), fol. 6v © Photo. R.M.N. / R.-G. Ojda The Index will be closed on June 4 and 5 as Princeton celebrates Class Day and Commencement 2018. We look forward to welcoming visitors during Princeton University weekday summer hours, 8:45-4:30, beginning June 6.