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Absolute FreeBSD, 2nd Edition by Michael W. Lucas

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Network Time

If a database starts entering dates three hours behind, or if emails arrive with dates from tomorrow, you'll hear about it pretty quickly. Time is important.[60] You have three tools to manage system time: tzsetup(8) controlling the time zone, the network time correction tool ntpdate(8), and the continuous time-adjustment program ntpd(8). Start by setting your time zone manually, then use Network Time Protocol.

Setting the Time Zone

Time zone is easy to manage with tzsetup(8), a menu-driven program that makes the appropriate changes on your system for each time zone. Global organizations might use on their systems the default of UTC (Universal Time Clock), while others use their own local time. Enter tzsetup, follow the geographic prompts, ...

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