Set Date Time in Cisco Router

This intruction of set date time on Cisco Router, use it for NTP server and other router use it as NTP peer.

Set date time

R#clock ?
 set  Set the time and date

R#clock set ?
 hh:mm:ss  Current Time

R#clock set 11:20:00 ?
 <1-31>  Day of the month
 MONTH   Month of the year

R#clock set 11:20:00 26?
<1-31> 

R#clock set 11:20:00 26 ?
 MONTH  Month of the year

R#clock set 11:20:00 26 SEPT ?
 <1993-2035>  Year

R#clock set 11:20:00 26 SEPT 2007

R#sh clock
11:20:03.415 UTC Wed Sep 26 2007

R(config)#clock timezone GMT 7

R(config)#do sh clock
11:21:11.979 GMT Wed Sep 26 2007

R(config)#ntp clock-period 17179574

R(config)#ntp master

R(config)#do sh clock
11:31:30.675 GMT Wed Sep 26 2007

NTP peer

RX(config)#ntp clock-period 17179576

RX(config)#ntp peer 1.2.3.4

RX(config)#do sh clock
.04:31:33.639 UTC Wed Sep 26 2007