When Setting up an Event Date, you have 3 options:
1. Single Date eg. 31/12/2015
This will be displayed on the public registration page as Thursday, 31 December 2015
2.Start Date / End Date eg. 31/12/2015 - 01/01/2016
This will be displayed on the public registration page as Thursday, 31 December 2015 - Friday, 1 January 2016
3. Text eg. 2015-2016 Season
Text date is used when neither of the other two options are applicable.