If you live in the United States, you are probably affected by a law passed by Congress in 2005 which turned the daylight savings system upside-down. Computers are, obviously, affected by this as well. Steven J. Vaughan-Nichols explains how to update your Linux computers to the new DST rules: “To make sure your Linux system knows when DST is, this year and ever on, you need to update your zoneinfo file, or replace it with one that contains the new rules.” In addition, even though Apple has provided a fix for Mac OS X,
this fix does not work for Macs running 10.3.9 or lower. Apple does provide a fix. This is where a freeware utility also comes into play.