ntpdate-debian
set the date and time via NTP
SYNOPSIS
ntpdate-debian [ -46bBdqsuv ] [ -a key ] [ -k keyfile ] [ -o version ] [ -t timeout ] server [ ... ]
DESCRIPTION
ntpdate-debian is identical to ntpdate(8) except that it uses the configuration in /etc/default/ntpsec-ntpdate by default. ntpdate sets the local date and time by polling the Network Time Protocol (NTP) server(s) given as the server argument(s) to determine the correct time.