VM time syncs with host at reboot, even though it isn't set to. Why?

I have a VM (server 2008 R2) that is running on an ESXi 5.0 host. The time/date is wrong on the host. Everytime I reboot the virtual machine, the time/date on it sync with the host, even though I do not have that option enabled (in vsphere or vmware tools, see screenshot).

I adjusted the time/date on the host so the time is accurate when I reboot the VM now, but how do make sure that the VM does not sync the time/date with the host when it is rebooted?

Thanks, I can provide any other details you need.