Cisco - Configuration - Configure Clock

Router>ena
 
Router#clock ?
set  Set the time and date
 
Router#clock set ?
hh:mm:ss  Current Time
 
Router#clock set 21:34:17 ?
<1-31>  Day of the month
MONTH   Month of the year
 
Router#clock set 21:34:17 04 mar ?
<1993-2035>  Year
 
Router#clock set 21:34:17 04 mar 2012 ?
<cr>
 
Router#clock set 21:34:17 04 mar 2012