trusson the system, yes?
root@teldrassil:/usr/ports/lang/mono6.0 # ldd /usr/local/bin/mono /usr/local/bin/mono: libz.so.6 => /lib/libz.so.6 (0x8006b5000) libutil.so.9 => /lib/libutil.so.9 (0x8006cf000) libiconv.so.2 => /usr/local/lib/libiconv.so.2 (0x8006e6000) libm.so.5 => /lib/libm.so.5 (0x8007e4000) libinotify.so.0 => /usr/local/lib/libinotify.so.0 (0x800816000) libthr.so.3 => /lib/libthr.so.3 (0x800821000) libc.so.7 => /lib/libc.so.7 (0x80084c000)
-lexecinfois enough for now
from a stackoverflow answer:
The standard format for naming timezones in the Olson database is Continent/City. The "old" names you mention like US/Eastern, US/Central, and many more, are listed as backward compatibility links in the tzdata source distribution (in the file "backward"). According to the comment at the top of the file, these names may have become backward compatibility links in late 1993.