diff --git a/awx/main/analytics/collectors.py b/awx/main/analytics/collectors.py
index 1e30494845..d57f0969e6 100644
--- a/awx/main/analytics/collectors.py
+++ b/awx/main/analytics/collectors.py
@@ -12,7 +12,7 @@ from django.utils.timezone import now, timedelta
 from django.utils.translation import ugettext_lazy as _
 
 from awx.conf.license import get_license
-from awx.main.utils import get_awx_version, get_custom_venv_choices, camelcase_to_underscore
+from awx.main.utils import get_awx_version, get_custom_venv_choices, camelcase_to_underscore, datetime_hook
 from awx.main import models
 from django.contrib.sessions.models import Session
 from awx.main.analytics import register
@@ -42,7 +42,7 @@ def trivial_slicing(key, since, until):
 
     horizon = until - timedelta(weeks=4)
     last_entries = Setting.objects.filter(key='AUTOMATION_ANALYTICS_LAST_ENTRIES').first()
-    last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}')
+    last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}', object_hook=datetime_hook)
     last_entry = max(last_entries.get(key) or settings.AUTOMATION_ANALYTICS_LAST_GATHER or horizon, horizon)
     return [(last_entry, until)]
 
@@ -55,7 +55,7 @@ def four_hour_slicing(key, since, until):
 
         horizon = until - timedelta(weeks=4)
         last_entries = Setting.objects.filter(key='AUTOMATION_ANALYTICS_LAST_ENTRIES').first()
-        last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}')
+        last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}', object_hook=datetime_hook)
         last_entry = max(last_entries.get(key) or settings.AUTOMATION_ANALYTICS_LAST_GATHER or horizon, horizon)
 
     start, end = last_entry, None
@@ -70,7 +70,7 @@ def events_slicing(key, since, until):
 
     last_gather = settings.AUTOMATION_ANALYTICS_LAST_GATHER
     last_entries = Setting.objects.filter(key='AUTOMATION_ANALYTICS_LAST_ENTRIES').first()
-    last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}')
+    last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}', object_hook=datetime_hook)
     horizon = until - timedelta(weeks=4)
 
     lower = since or last_gather or horizon
diff --git a/awx/main/analytics/core.py b/awx/main/analytics/core.py
index 5411b856cf..71008fc2a5 100644
--- a/awx/main/analytics/core.py
+++ b/awx/main/analytics/core.py
@@ -18,7 +18,7 @@ import requests
 from awx.conf.license import get_license
 from awx.main.models import Job
 from awx.main.access import access_registry
-from awx.main.utils import get_awx_http_client_headers, set_environ
+from awx.main.utils import get_awx_http_client_headers, set_environ, datetime_hook
 from awx.main.utils.pglock import advisory_lock
 
 __all__ = ['register', 'gather', 'ship']
@@ -163,7 +163,7 @@ def gather(dest=None, module=None, subset=None, since=None, until=None, collecti
         last_gather = max(settings.AUTOMATION_ANALYTICS_LAST_GATHER or horizon, horizon)
 
         last_entries = Setting.objects.filter(key='AUTOMATION_ANALYTICS_LAST_ENTRIES').first()
-        last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}')
+        last_entries = json.loads((last_entries.value if last_entries is not None else '') or '{}', object_hook=datetime_hook)
 
         collector_module = module if module else collectors
         collector_list = [
diff --git a/awx/main/utils/common.py b/awx/main/utils/common.py
index 8ad4a9f485..38927bd308 100644
--- a/awx/main/utils/common.py
+++ b/awx/main/utils/common.py
@@ -18,6 +18,8 @@ from functools import reduce, wraps
 
 from decimal import Decimal
 
+from dateutil import parser
+
 # Django
 from django.core.exceptions import ObjectDoesNotExist, FieldDoesNotExist
 from django.utils.translation import ugettext_lazy as _
@@ -54,6 +56,7 @@ __all__ = [
     'copy_m2m_relationships',
     'prefetch_page_capabilities',
     'to_python_boolean',
+    'datetime_hook',
     'ignore_inventory_computed_fields',
     'ignore_inventory_group_removal',
     '_inventory_updates',
@@ -115,6 +118,16 @@ def to_python_boolean(value, allow_none=False):
         raise ValueError(_(u'Unable to convert "%s" to boolean') % value)
 
 
+def datetime_hook(d):
+    new_d = {}
+    for key, value in d.items():
+        try:
+            new_d[key] = parser.parse(value)
+        except Exception:
+            new_d[key] = value
+    return new_d
+
+
 def camelcase_to_underscore(s):
     """
     Convert CamelCase names to lowercase_with_underscore.