The VMWare host and SMG are both configured to set the system time.
There is severe time drift or resets of server time that cannot be easliy explained.
VMWare ESXi 5.0+
When a VM host and guest OS both compete to control system time, anomolies can be introduced. In VM environments, this can either be done with the VM's daemon, or the client OS' daemon. Most virtualization experts agree the client OS should handle NTP. VMWare recommends that the guest OS time daemon controls the system clock.