December 22nd is the wedding anniversary of Sheila and Wally Weisman, Greg Weisman's parents.
↑Series producer Greg Weisman stated that even though the series does not have a "canon year", the production team based the days of the week on the 2010 calendar. (Weisman, Greg (2011-11-18). Question #13695. Ask Greg. Retrieved 2011-11-18.).