ntpdate

Synchronize and set the date and time via NTP. More information: http://support.ntp.org/documentation.

• Synchronize and set date and time:
  sudo ntpdate {{host}}
• Query the host without setting the time:
  ntpdate -q {{host}}
• Use an unprivileged port in case a firewall is blocking privileged ports:
  sudo ntpdate -u {{host}}
• Force time to be stepped using settimeofday instead of slewed:
  sudo ntpdate -b {{host}}