diff --git a/fixtures/miniconf-fixtures/symposion_proposals.json b/fixtures/miniconf-fixtures/symposion_proposals.json
index e54c63d1..196509e8 100644
--- a/fixtures/miniconf-fixtures/symposion_proposals.json
+++ b/fixtures/miniconf-fixtures/symposion_proposals.json
@@ -5,7 +5,7 @@
             "end": "2017-11-30T12:59:00Z",
             "published": false,
             "section": 3,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 3
@@ -16,7 +16,7 @@
             "end": "2017-11-30T12:59:00Z",
             "published": false,
             "section": 4,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 4
@@ -27,7 +27,7 @@
             "end": "2017-11-30T12:59:00Z",
             "published": false,
             "section": 5,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 5
@@ -38,7 +38,7 @@
             "end": "2017-11-30T12:59:00Z",
             "published": false,
             "section": 6,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 6
@@ -49,7 +49,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 7,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 7
@@ -60,7 +60,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 8,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 8
@@ -71,7 +71,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 9,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 9
@@ -82,7 +82,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 10,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 10
@@ -93,7 +93,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 11,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 11
@@ -104,7 +104,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 12,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 12
@@ -115,7 +115,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 13,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 13
@@ -126,7 +126,7 @@
             "end": "2017-11-29T13:01:00Z",
             "published": false,
             "section": 14,
-            "start": "2017-11-01T14:01:00Z"
+            "start": "2017-10-15T14:01:00Z"
         },
         "model": "symposion_proposals.proposalsection",
         "pk": 14