Re: DateTime->season?

David E. Wheeler wrote:
> Hey All,
> 
> Someone on the Bricolage list needed a season method, so I whipped up 
> this ugly one:
> 
>     sub season {
>         my $date = shift->strftime('%m-%d');
>         return $date lt '03-21' ? 'winter'
>              : $date lt '06-21' ? 'spring'
>              : $date lt '09-21' ? 'summer'
>              : $date lt '12-21' ? 'autumn'
>              :                    'winter';
>     }
> 
> Since seasons can sometimes change on the 22nd instead of the 21st, this 
> isn't quite right. Anyone else done something like this but more accurate?

Where in the world do you want to calculate them?

http://en.wikipedia.org/wiki/Season#Reckoning seems to have the 
information you need.

Cheers!
Rick Measham