Generally available: You can sync a Compute Engine VM's clock with its host server's clock by using chrony and ptp_kvm...

Generally available: You can sync a Compute Engine VM's clock with its host server's clock by using chrony and ptp_kvm to achieve accuracy designed to be within 1 ms. Accurate time synchronization is supported in all standard public Google Cloud regions and zones. For more information, see Configure accurate time for Compute Engine VMs.