ntpdate-debian (8)
NAME
ntpdate-debian - set the date and time via NTPSYNOPSIS
ntpdate-debian [-bBdoqsuv] [-a key] [-e authdelay] [-k keyfile] [-o version] [-p samples] [-t timeout]DESCRIPTION
ntpdate-debian is identical to ntpdate(8) except that it uses the configuration in /etc/default/ntpdate by default. ntpdate sets the local date and time by polling Network Time Protocol (NTP) servers.