diff --git a/public/javascripts/course.js b/public/javascripts/course.js
index 90d085ea3..b015af857 100644
--- a/public/javascripts/course.js
+++ b/public/javascripts/course.js
@@ -663,7 +663,7 @@ function regex_homework_end_publish_time()
     var myDate = new Date();
     if($.trim($("#homework_publish_time").val()) == "")
     {
-        $("#homework_publish_time").val(myDate.toLocaleDateString());
+        $("#homework_publish_time").val(myDate.getFullYear()+'-'+(myDate.getMonth()+1)+'-'+myDate.getDate());
     }
     var publish_time = Date.parse($("#homework_publish_time").val());
     var end_time = Date.parse($("#homework_end_time").val());
diff --git a/public/javascripts/new_user.js b/public/javascripts/new_user.js
index e99abd4f1..4cf380523 100644
--- a/public/javascripts/new_user.js
+++ b/public/javascripts/new_user.js
@@ -97,7 +97,7 @@ function regex_homework_end_publish_time()
     var myDate = new Date();
     if($.trim($("#homework_publish_time").val()) == "")
     {
-        $("#homework_publish_time").val(myDate.toLocaleDateString());
+        $("#homework_publish_time").val(myDate.getFullYear()+'-'+(myDate.getMonth()+1)+'-'+myDate.getDate());
     }
     var end_time = Date.parse($("#homework_end_time").val());
     var publish_time = Date.parse($("#homework_publish_time").val());