Script to change time on client:
[root@vsd3 ~]# uname -a
Linux vsd3.hp8300 2.6.32-573.18.1.el6.x86_64 #1 SMP Tue Feb 9 22:46:17 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
date
ntpq -p
ntpstat
service ntpd stop
ntpdate server1
date
service ntpd start
ntpq -p
ntpstat