diff --git a/app/models/writing_conference.rb b/app/models/writing_conference.rb
index d10e1f3..392626e 100644
--- a/app/models/writing_conference.rb
+++ b/app/models/writing_conference.rb
@@ -98,7 +98,7 @@ class WritingConference
         if same_year && same_month
           date = self.period_start_date.strftime(date_format.sub('%d', "%d-#{self.period_end_date.strftime('%d')}"))
         elsif same_year
-          month_date_format = date_format.match(/(%m|%d)[\-\/\.]*(%m|%d)/)[0] rescue ''
+          month_date_format = date_format.match(/(%b|%m|%d)[\-\/\. ]*(%b|%m|%d)/)[0] rescue ''
           date = self.period_start_date.strftime(date_format.sub(month_date_format, "#{month_date_format}-#{self.period_end_date.strftime(month_date_format)}"))
         else
           date = self.period_start_date.strftime(date_format) + ' ~ ' + self.period_end_date.strftime(date_format)