I was launching a couple of Ubuntu 14.04 KVM guests and I ve noticed that time was wrong. OK I thought, a simple ntpdate command and ntp service enabled will fix the issue. Made a reboot of the guest host and show that the time was ok. Then I destroyed the guest and when I checked the time it was wrong. This can’t be right, I thought, and started researching what might be the issue. What I found is that KVM guests should always consider their hardware clock in UTC time while my guests configuration was in local time.