Dates and Times in Cardnames+example
Starting with a reference to a day:
2013 March 3 or 2013March 3, 2013Mar.4 or 2013_march_3 all get the key => 2013_march_03
Event_on_2013_July_4 -> event_on_2013_july_04
Monthly_2013Oct => Monthly_2013_october