diff --git a/src/apps/api/serializers/submission_leaderboard.py b/src/apps/api/serializers/submission_leaderboard.py
index f4d9594af..368f8fec4 100644
--- a/src/apps/api/serializers/submission_leaderboard.py
+++ b/src/apps/api/serializers/submission_leaderboard.py
@@ -20,7 +20,7 @@ class SubmissionLeaderBoardSerializer(serializers.ModelSerializer):
     display_name = serializers.CharField(source='owner.display_name')
     slug_url = serializers.CharField(source='owner.slug_url')
     organization = SimpleOrganizationSerializer(allow_null=True)
-    created_when = serializers.DateTimeField(format="%Y-%m-%d %H:%M")
+    created_when = serializers.DateTimeField()
 
     class Meta:
         model = Submission
diff --git a/src/apps/api/serializers/submissions.py b/src/apps/api/serializers/submissions.py
index 1f31fe2c3..5511c027e 100644
--- a/src/apps/api/serializers/submissions.py
+++ b/src/apps/api/serializers/submissions.py
@@ -26,7 +26,7 @@ class SubmissionSerializer(serializers.ModelSerializer):
     phase_name = serializers.CharField(source='phase.name')
     on_leaderboard = serializers.BooleanField(read_only=True)
     task = TaskSerializer()
-    created_when = serializers.DateTimeField(format="%Y-%m-%d %H:%M")
+    created_when = serializers.DateTimeField()
     auto_run = serializers.SerializerMethodField(read_only=True)
     can_make_submissions_public = serializers.SerializerMethodField(read_only=True)
 
diff --git a/src/static/riot/competitions/detail/leaderboards.tag b/src/static/riot/competitions/detail/leaderboards.tag
index 7ddef46ea..b004d5ce9 100644
--- a/src/static/riot/competitions/detail/leaderboards.tag
+++ b/src/static/riot/competitions/detail/leaderboards.tag
@@ -84,7 +84,7 @@
             <td if="{submission.organization === null}"><a href="{submission.slug_url}">{ submission.owner }</a></td>
             <td if="{submission.organization !== null}"><a href="{submission.organization.url}">{ submission.organization.name }</a></td>
             <td>{submission.num_entries}</td>
-            <td>{submission.created_when}</td>
+            <td>{ pretty_date(submission.created_when) }</td>
             <td>{submission.id}</td>
             <td each="{ column in filtered_columns }">
                 <a if="{column.title == 'Detailed Results'}" href="detailed_results/{get_detailed_result_submisison_id(column, submission)}" target="_blank" class="eye-icon-link">
@@ -108,6 +108,13 @@
         self.enable_detailed_results = false
         self.show_detailed_results_in_leaderboard = false
 
+        self.pretty_date = function (date_string) {
+            if (!!date_string) {
+                return luxon.DateTime.fromISO(date_string).toFormat('yyyy-MM-dd HH:mm')
+            } else {
+                return ''
+            }
+        }
        
         self.bold_class = function(column, submission){
             // Return `text-bold` if submission has 
diff --git a/src/static/riot/competitions/detail/submission_manager.tag b/src/static/riot/competitions/detail/submission_manager.tag
index 0f76b320b..e714718d8 100644
--- a/src/static/riot/competitions/detail/submission_manager.tag
+++ b/src/static/riot/competitions/detail/submission_manager.tag
@@ -89,7 +89,7 @@
                 <td>{ submission.filename }</td>
                 <td if="{ opts.admin }">{ submission.owner }</td>
                 <td if="{ opts.admin }">{ submission.phase.name }</td>
-                <td>{ submission.created_when}</td>
+                <td>{ pretty_date(submission.created_when) }</td>
                 <td class="right aligned collapsing">
                     { submission.status }
                     <sup data-tooltip="{submission.status_details}">
@@ -201,6 +201,8 @@
     <script>
         var self = this
 
+        
+
         self.selected_phase = undefined
         self.selected_submission = undefined
         self.hide_output = false
@@ -217,6 +219,14 @@
             $(self.refs.submission_table).tablesort()
         })
 
+        self.pretty_date = function (date_string) {
+            if (!!date_string) {
+                return luxon.DateTime.fromISO(date_string).toFormat('yyyy-MM-dd HH:mm')
+            } else {
+                return ''
+            }
+        }
+
         self.is_admin = () => {
             return _.get(self.selected_submission, 'admin', false)
         }
@@ -607,4 +617,4 @@
         .failed.question.circle.icon
             color #2c3f4c
     </style>
-</submission-manager>
\ No newline at end of file
+</submission-manager>