Install with composer
$ composer require jgi/swedish-dates-bundle
Add the bundle to your AppKernel.
new JGI\SwedishDatesBundle\JGISwedishDatesBundle(),
$date = $container->get('jgi.swedish_dates.datemanager')->getDate(new \Datetime('2014-12-25'));
echo $date->getDateTime()->format('Y-m-d') . ": " .
($date->isRedDay() ? 'red day' : 'not red day') . ' - ' . $date->getName();
// 2014-12-25: red day - Juldagen
Bundle under the MIT License