This is Perl module DateTime::Span::Birthdate.

INSTALLATION

DateTime::Span::Birthdate installation is straightforward. If your CPAN shell is set up,
you should just be able to do

   % cpan DateTime::Span::Birthdate

Download it, unpack it, then build it as per the usual:

   % perl Makefile.PL
   % make && make test

Then install it:

   % make install

DOCUMENTATION

DateTime::Span::Birthdate documentation is available as in POD. So you can do:

   % perldoc DateTime::Span::Birthdate

to read the documentation online with your favorite pager.

Tatsuhiko Miyagawa