<http://schema.org/openingHours>
"Mo 08:00-17:00, Tu 08:00-17:00, We 08:00-17:00, Th 08:00-17:00, Fr 08:00-17:00"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ingo.me/the-workshop/2014/10/21/how-to-grow-events-part-3-social-emails-3>