The disadvantage with CPAN is that you need to know what you're doing (or check Perladvent and ask on Perlmonks.org). How many DateTime modules are there? Whic

The disadvantage with CPAN is that you need to know what you're doing (or check Perladvent and ask on Perlmonks.org). How many DateTime modules are there? Which one is really used by everyone the last few years -- and when should you use the previous one? CPAN is, afaik, better than anything else out there.