--- a/lib/redmine/i18n.rb	2010-10-20 16:37:31.612267815 +0200
+++ b/lib/redmine/i18n.rb	2010-10-20 23:47:41.962268688 +0200
@@ -37,7 +37,13 @@
 
     def format_date(date)
       return nil unless date
-      Setting.date_format.blank? ? ::I18n.l(date.to_date, :count => date.strftime('%d')) : date.strftime(Setting.date_format)
+      return ::I18n.l(date.to_date, :count => date.strftime('%d')) if Setting.date_format.blank?
+      fmt = Setting.date_format.dup
+      fmt.gsub!('%a', abbr_day_name(date.day))
+      fmt.gsub!('%A', day_name(date.day)) 
+      fmt.gsub!('%b', abbr_month_name(date.month))
+      fmt.gsub!('%B', month_name(date.month)) 
+      return date.strftime(fmt)
     end
     
     def format_time(time, include_date = true)
@@ -49,10 +55,18 @@
                                    ((include_date ? "#{format_date(time)} " : "") + "#{local.strftime(Setting.time_format)}")
     end
 
+    def abbr_day_name(day)
+      ::I18n.t('date.abbr_day_names')[day % 7]
+    end
+
     def day_name(day)
       ::I18n.t('date.day_names')[day % 7]
     end
   
+    def abbr_month_name(month)
+      ::I18n.t('date.abbr_month_names')[month]
+    end
+
     def month_name(month)
       ::I18n.t('date.month_names')[month]
     end