diff --git a/app/views/layouts/standard.html.erb b/app/views/layouts/standard.html.erb
index 11ebb9d8..223efb41 100644
--- a/app/views/layouts/standard.html.erb
+++ b/app/views/layouts/standard.html.erb
@@ -30,6 +30,7 @@
       var defaultTags = <%= default_tags_for_autocomplete %>;
       var tagNames = <%= tag_names_for_autocomplete %>;
       var dateFormat = '<%= date_format_for_date_picker %>';
+      var weekStart = '<%= current_user.prefs.week_starts %>';
       <% end -%>
       <% if @prefs.refresh != 0 -%>
         setup_auto_refresh(<%= @prefs["refresh"].to_i*60000 %>);
diff --git a/public/javascripts/application.js b/public/javascripts/application.js
index ca39f728..ccdab0ae 100644
--- a/public/javascripts/application.js
+++ b/public/javascripts/application.js
@@ -185,7 +185,7 @@ function project_defaults(){
 }
 
 function enable_rich_interaction(){
-  $('input.Date').datepicker({'dateFormat': dateFormat});
+  $('input.Date').datepicker({'dateFormat': dateFormat, 'firstDay': weekStart});
   /* Autocomplete */
   $('input[name=context_name]').autocomplete(contextNames, {matchContains: true});
   $('input[name=project[default_context_name]]').autocomplete(contextNames, {matchContains: true});