Users Guide

Protocol Overview
The NTP messages to one or more servers and processes the replies as received. The server interchanges addresses and ports, fills in or
overwrites certain fields in the message, recalculates the checksum, and returns it immediately.
Information included in the NTP message allows each client/server peer to determine the timekeeping characteristics of its other peers,
including the expected accuracies of their clocks. Using this information, each peer is able to select the best time from possibly several
other clocks, update the local clock, and estimate its accuracy.
System Time and Date 793