sync_guest_clock() {

local host_now

host_now="$(date -u '+%Y-%m-%d %H:%M:%S UTC')"

host_now="@$(date -u '+%s')"

guest_exec date -u -s "$host_now" >/dev/null

guest_exec hwclock --systohc >/dev/null 2>&1 || true

guest_exec timedatectl set-ntp true >/dev/null 2>&1 || true