You're not supposed to run an NTP server on a VM. The CPU cycles can be taken from the guest and perhaps used by the host or another guest. Other options that a

You're not supposed to run an NTP server on a VM. The CPU cycles can be taken from the guest and perhaps used by the host or another guest. Other options that are available, is to drill a hole in the data center and run a GPS receiver to the roof and get the time from the GPS satellites. I think that is something many VPS/cloud providers will not allow. Edit: s/your/you're/