I know this has come up before, but I don't think it was ever fully
resolved.  Sorry if it ought to be a FAQ, but it isn't :-)

Here's my situation.  The clock is set correctly in MacOS.  My
location is also set correctly in the MacOS Map control panel.  And I
have put a link to the correct time zone in /etc/localtime.  Given
this situation, the unix system clock (output of 'date'; timestamps on
files) is several hours off.  If I point /etc/localtime at
/usr/share/zoneinfo/UTC or .../GMT then 'date' gives the correct time,
but marks it as GMT, not EDT.  I suppose I could just leave
/etc/localtime pointing at UTC, but that seems like a kludge solution.
I have heard that there is a compile-time kernel variable related to
all this, but I have also heard that this variable is obsolete.  And
in fact, it doesn't appear in the kernel configuration files.

Any ideas?  Thanks in advance!

-Jesse