diff --git a/freekake_api/mission/models.py b/freekake_api/mission/models.py
index 97486d5..0fd4771 100644
--- a/freekake_api/mission/models.py
+++ b/freekake_api/mission/models.py
@@ -58,11 +58,14 @@ class Mission(SoftDeleteModel):
     category = models.CharField(max_length=50, choices=MISSION_CATEGORY_CHOICES)
     task = models.CharField(max_length=50, choices=MISSION_TASK_CHOICES)
 
-    date_from = models.DateField(null=True, blank=True)
-    date_to = models.DateField(null=True, blank=True)
+    # date_from = models.DateField(null=True, blank=True)
+    # date_to = models.DateField(null=True, blank=True)
     
-    time_from_valid = models.TimeField(null=True, blank=True)
-    time_to_valid = models.TimeField(null=True, blank=True)
+    # time_from_valid = models.TimeField(null=True, blank=True)
+    # time_to_valid = models.TimeField(null=True, blank=True)
+
+    date_time_from_valid = models.DateTimeField(null=True, blank=True)
+    date_time_to_valid = models.DateTimeField(null=True, blank=True)
 
     status = models.CharField(max_length=50, choices=MISSION_STATUS_CHOICES, default='draft')
 
diff --git a/freekake_api/mission/serializers.py b/freekake_api/mission/serializers.py
index 6aa66e5..a38d189 100644
--- a/freekake_api/mission/serializers.py
+++ b/freekake_api/mission/serializers.py
@@ -17,10 +17,8 @@ class MissionSerializer(serializers.ModelSerializer):
             'category',
             'task',
             'status',
-            'date_from',
-            'date_to',
-            'time_from_valid',
-            'time_to_valid',
+            'date_time_from_valid',
+            'date_time_to_valid',
         ]
     
     def __init__(self, *args, **kwargs):
@@ -48,10 +46,8 @@ class MissionDetailSerializer(serializers.ModelSerializer):
             'category',
             'task',
             'status',
-            'date_from',
-            'date_to',
-            'time_from_valid',
-            'time_to_valid',
+            'date_time_from_valid',
+            'date_time_to_valid',
             'category_display',
             'task_display',
             'status_display',