I needed to convert between Date::Manip and DateTime so I wrote a module to convert the date and duration formats (recurrences may follow if there is demand, there are some nasty wrinkles though).
Get it from http://www.limey.net/~fiji/perl/ If people see no major problems with this module I will add it to CVS and CPAN. I also want to update the FAQ with a section on how to convert between different timezone modules, since most of the other modules use epochs that is easy to handle. I wanted to write one to convert Date::Calc::Object as well, but timezones really get ugly there. Since the TZ info is not kept with the object the user would have to tell us whether it was in local or GMT time when converting in both directions. I am still thinking about how to handle the interface in a sane manner. -ben
