livingsocial 5 hour Flash Sale – $5 off $15 Posted on February 23, 2015 by The Goddess Today only! Get $5 off a purchase of $15 or more with code ACADEMY. This offer is valid between 2/23, 12:00pm ET and 2/23, 11:59pm ET. Restrictions apply. Makes your visit to the Adler Planetarium that much cheaper!