This is caused by the restart of service from a remote desktop and if you perform hot migration.
This will not be a big impact with your cloud performance but you will need to change to real time.
To adjust the time from a remote desktop
1. Login to your remote desktop > control panel > date and time
2. Click on Internet time tab and click update now.
If this did not do any changes with the time. You can reboot VM from the cloud console.