A WORD OF WARNING
What timezone is correct for your system? It depends on the geographi-
cal location of the machine. Getting the correct location is impor-
tant, but the system must also know how your hardware clock is set.
Most DOS based PCs set their hardware clock on Local Time, while most
UNIX systems set their hardware clock to UTC.
The Debian GNU/Linux system gains its knowledge of this setting from
the file /etc/default/rcS. This file contains either the line UTC=yes,
which indicates that the hardware clock is set to UTC, or it contains
the line UTC=no, which declares the hardware clock is set to Local
Time. If these setting are correct, and the hardware clock is truly set
as indicated, then configuring the proper timezone for the machine will
cause the proper date and time to be displayed. If these are not set
correctly, the the reported time will be quite incorrect. See
hwclock(8) for more details on this topic.