ntp 1:4.2.0a+stable-8.1ubuntu2 (ia64 binary) in ubuntu dapper

Network Time Protocol: network utilities
 NTP, the Network Time Protocol, is used to keep computer clocks accurate
 over the Internet, or by following an accurate hardware receiver which
 interprets GPS, DCF-77, NIST or similar time signals.
 .
 This package contains control programs which can access a remote NTP
 server. Thus you will need either ntp-simple or ntp-refclock;
 ntp-refclock includes drivers for radio clocks.
 .
 For more information about the NTP protocol / NTP server configuration
 and operation, load the optional Debian package 'ntp-doc'.