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Butler Library Building Hours

24 hour access to Butler Library is limited to current students, faculty, and staff of Columbia University and its affiliates.
Each of the 24-hour reading rooms will close for one hour for maintenance. Room closures and other information about the reading rooms may be found here.
Butler Library service hours may be found here.
October 2019
SundayMondayTuesdayWednesdayThursdayFridaySaturday
29
Open 24 hours on 09/29/2019
30
Open 24 hours on 09/30/2019
1
Open 24 hours on 10/01/2019
2
Open 24 hours on 10/02/2019
3
Open 24 hours on 10/03/2019
4
Open 24 hours on 10/04/2019
5
Open 24 hours on 10/05/2019
6
Open 24 hours on 10/06/2019
7
Open 24 hours on 10/07/2019
8
Open 24 hours on 10/08/2019
9
Open 24 hours on 10/09/2019
10
Open 24 hours on 10/10/2019
11
Open 24 hours on 10/11/2019
12
Open 24 hours on 10/12/2019
13
Open 24 hours on 10/13/2019
14
Open 24 hours on 10/14/2019
15
Open 24 hours on 10/15/2019
16
Open 24 hours on 10/16/2019
17
Open 24 hours on 10/17/2019
18
Open 24 hours on 10/18/2019
19
Open 24 hours on 10/19/2019
20
Open 24 hours on 10/20/2019
21
Open 24 hours on 10/21/2019
22
Open 24 hours on 10/22/2019
23
Open 24 hours on 10/23/2019
24
Open 24 hours on 10/24/2019
25
Open 24 hours on 10/25/2019
26
Open 24 hours on 10/26/2019
27
Open 24 hours on 10/27/2019
28
Open 24 hours on 10/28/2019
29
Open 24 hours on 10/29/2019
30
Open 24 hours on 10/30/2019
31
Open 24 hours on 10/31/2019
1
Open 24 hours on 11/01/2019
2
Open 24 hours on 11/02/2019