University Access Classes Open to the Public ☰ Fall 2022 Aug 27-Dec 19 Winter 2023 Dec 26-Jan 20 Spring 2023 Jan 23-May 12 Summer 2022 May 31-Aug 23 There are problems with the action. Please try again. Winter 2023 Calendar Date(s) FULLY ONLINE COURSES October 3, 2022 Online Registration Begins December 26, 2022 First Day of Class December 26, 2022 – January 1, 2023 Holiday; campus closed. Online classes remain in session during campus closure for holidays. The CSUN library is available electronically. January 2, 2023 Last day to add without permission. Last day to drop and receive a refund January 3, 2023 Last day to drop a class using the online, self-service registration system; Last day to add a class using the online, self-service registration system; a permission number is required. January 20, 2023 Last Day of Classes Questions?Visit Knowledge Center -or- Call (818) 677-2504