https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/pdf/deploying_different_types_of_servers/red_hat_enterprise_linux-8-deploying_different_types_of_servers-en-us.pdf
VirtualBox set back bios time
VBoxManage modify <vm> —biossystemtimeoffset -<milliseconds>
VBoxManage modify <vm> —bios-system-time-offset -<milliseconds>