(I sent this a week ago but it seems to have been lost.) Possible addition to the "Other tz binary file readers" part of tz-link.htm: <li> <a href="http://search.cpan.org/perldoc?DateTime::TimeZone::Tzfile">DateTime::TimeZone::Tzfile</a> is a <code>tz</code> binary file reader written in Perl. It is freely available under the same terms as Perl (dual <abbr>GPL</abbr> and Artistic license). </li> You already have a note about DateTime::TimeZone in a different section. There's work underway to make DT:TZ use DT:TZ:Tzfile for its Olson needs, but currently they're essentially unrelated. -zefram