diff --git a/app/models/writing_conference.rb b/app/models/writing_conference.rb
index 8bf8b84..8d83c0e 100644
--- a/app/models/writing_conference.rb
+++ b/app/models/writing_conference.rb
@@ -40,6 +40,8 @@ class WritingConference
 
   before_validation :add_http
 
+  scope :sort_for_frontend, ->{ where(:is_hidden=>false).order_by(:year => "desc", :publication_date => "desc") }
+
   def create_link
     title = []
 
diff --git a/app/views/admin/writing_conferences/_form.html.erb b/app/views/admin/writing_conferences/_form.html.erb
index 9b4e4ef..5525934 100644
--- a/app/views/admin/writing_conferences/_form.html.erb
+++ b/app/views/admin/writing_conferences/_form.html.erb
@@ -183,7 +183,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t("personal_conference.period_start_date") %></label>
         <div class="controls">
-          <%= f.datetime_picker :period_start_date, :no_label => true, :format=>"yyyy/MM/dd", :placeholder=>"YYYY/MM/DD" %>
+          <%= f.datetime_picker :period_start_date, :no_label => true, :format=>"yyyy/MM/dd", :placeholder=>"YYYY/MM/DD", :value => @writing_conference.period_start_date, :new_record => @writing_conference.new_record? %>
         </div>
       </div>
 
@@ -191,7 +191,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t("personal_conference.period_end_date") %></label>
         <div class="controls">
-          <%= f.datetime_picker :period_end_date, :no_label => true, :format=>"yyyy/MM/dd", :placeholder=>"YYYY/MM/DD" %>
+          <%= f.datetime_picker :period_end_date, :no_label => true, :format=>"yyyy/MM/dd", :placeholder=>"YYYY/MM/DD", :value => @writing_conference.period_end_date, :new_record => @writing_conference.new_record? %>
         </div>
       </div>
 
@@ -257,7 +257,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t("personal_conference.publication_date") %></label>
         <div class="controls">
-          <%= f.datetime_picker :publication_date, :no_label => true, :format=>"yyyy/MM/dd", :placeholder=>"YYYY/MM/DD" %>
+          <%= f.datetime_picker :publication_date, :no_label => true, :format=>"yyyy/MM/dd", :placeholder=>"YYYY/MM/DD", :value => @writing_conference.publication_date, :new_record => @writing_conference.new_record?  %>
         </div>
       </div>