$ faketime -d '2006/03/26 02:49:11' date
faketime: 2006/03/26 02:49:11: invalid date format
$ faketime -d '2006/03/25 02:49:11' date
Sat Mar 25 02:49:11 MSK 2006
$ faketime -d '2006/03/27 02:49:11' date
Mon Mar 27 02:49:11 MSD 2006
$ 

В чем прикол?