Shortly after the DST jump in the United States on March 11th, the 'date' command returned an incorrect relevant date for the first hour after midnight. See text capture below.
Note that 2am on March 11th is the official date change; therefore these commands are illustrating how the relative date is incorrect in the first hour of the first day after the time change (i.e. are returning the value one would expect if no time change had occurred). [root ~]# date --version date (GNU coreutils) 5.97 Copyright (C) 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law. Written by David MacKenzie. [root ~]# date Mon Mar 12 10:58:37 CDT 2012 [root ~]# date -d yesterday +%F 2012-03-11 [root ~]# service ntpd stop Shutting down ntpd: [ OK ] [root ~]# date Mon Mar 12 11:01:08 CDT 2012 [root ~]# date 03120015.00 Mon Mar 12 00:15:00 CDT 2012 [root ~]# date -d yesterday +%F 2012-03-10
