Objective 1: Maintain System Time
An accurate system clock is important on a Linux system for a variety of reasons. Log entries need to be accurate so you can accurately determine what system events occurred. Programs such as make and anacron require accurate modification times on files. Network file sharing (such as NFS) requires both client and server to keep accurate time so file operations are kept in sync.
The most popular way to keep accurate time on an Internet-connected Linux system is to use the Network Time Protocol (NTP) and the NTP software package from http://www.ntp.org.