diff --git a/src/design/plone/contenttypes/indexers/configure.zcml b/src/design/plone/contenttypes/indexers/configure.zcml
index 74795f3d..eb8c127b 100644
--- a/src/design/plone/contenttypes/indexers/configure.zcml
+++ b/src/design/plone/contenttypes/indexers/configure.zcml
@@ -4,6 +4,10 @@
       factory=".events.event_location"
       name="event_location"
       />
+  <adapter
+      factory=".events.effectivestart"
+      name="effectivestart"
+      />
   <adapter
       factory=".pagina_argomento.SearchableTextExtender"
       name="IPaginaArgomento"
diff --git a/src/design/plone/contenttypes/indexers/events.py b/src/design/plone/contenttypes/indexers/events.py
index 651f1f9f..e50a340c 100644
--- a/src/design/plone/contenttypes/indexers/events.py
+++ b/src/design/plone/contenttypes/indexers/events.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 from plone.app.contenttypes.interfaces import IEvent
 from plone.indexer.decorator import indexer
+from plone.event.interfaces import IEventAccessor
 
 
 @indexer(IEvent)
@@ -17,3 +18,11 @@ def rassegna(context, **kw):
     """ """
     children = context.values()
     return "Event" in [child.portal_type for child in children]
+
+
+@indexer(IEvent)
+def effectivestart(obj):
+    start = IEventAccessor(obj).start
+    if not start:
+        raise AttributeError
+    return start
diff --git a/src/design/plone/contenttypes/profiles/default/metadata.xml b/src/design/plone/contenttypes/profiles/default/metadata.xml
index e6d1c9bc..ac3691e3 100644
--- a/src/design/plone/contenttypes/profiles/default/metadata.xml
+++ b/src/design/plone/contenttypes/profiles/default/metadata.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <metadata>
-  <version>7306</version>
+  <version>7308</version>
   <dependencies>
     <dependency>profile-redturtle.bandi:default</dependency>
     <dependency>profile-collective.venue:default</dependency>
diff --git a/src/design/plone/contenttypes/profiles/default/registry/criteria.xml b/src/design/plone/contenttypes/profiles/default/registry/criteria.xml
index 730d900a..068b2c5a 100644
--- a/src/design/plone/contenttypes/profiles/default/registry/criteria.xml
+++ b/src/design/plone/contenttypes/profiles/default/registry/criteria.xml
@@ -568,4 +568,25 @@
            remove="True"
   >
 </records>
+  <records interface="plone.app.querystring.interfaces.IQueryField"
+           prefix="plone.app.querystring.field.effectivestart">
+    <value key="title" i18n:translate="effectivestart">Data effettiva di inizio evento</value>
+    <value key="description">Criterio per ricerche che si basano sulla data effettiva di inizio</value>
+    <value key="enabled">True</value>
+    <value key="sortable">True</value>
+    <value key="operations">
+        <element>plone.app.querystring.operation.date.lessThan</element>
+        <element>plone.app.querystring.operation.date.largerThan</element>
+        <element>plone.app.querystring.operation.date.between</element>
+        <element>plone.app.querystring.operation.date.lessThanRelativeDate</element>
+        <element>plone.app.querystring.operation.date.largerThanRelativeDate</element>
+        <element>plone.app.querystring.operation.date.today</element>
+        <element>plone.app.querystring.operation.date.beforeToday</element>
+        <element>plone.app.querystring.operation.date.afterToday</element>
+        <element>plone.app.querystring.operation.date.beforeRelativeDate</element>
+        <element>plone.app.querystring.operation.date.afterRelativeDate</element>
+    </value>
+    <value i18n:translate="" i18n:domain="plone" key="group">Dates</value>
+  </records>
+
 </registry>
diff --git a/src/design/plone/contenttypes/upgrades/configure.zcml b/src/design/plone/contenttypes/upgrades/configure.zcml
index d766a20d..05268fd6 100644
--- a/src/design/plone/contenttypes/upgrades/configure.zcml
+++ b/src/design/plone/contenttypes/upgrades/configure.zcml
@@ -898,5 +898,18 @@
       destination="7306"
       handler=".to_730x.to_7306"
       />
-
+  <genericsetup:upgradeStep
+      title="Reload registry"
+      profile="design.plone.contenttypes:default"
+      source="7306"
+      destination="7307"
+      handler=".to_730x.to_7307"
+      />
+  <genericsetup:upgradeStep
+      title="Reload registry"
+      profile="design.plone.contenttypes:default"
+      source="7307"
+      destination="7308"
+      handler=".to_730x.to_7308"
+      />
 </configure>
diff --git a/src/design/plone/contenttypes/upgrades/to_730x.py b/src/design/plone/contenttypes/upgrades/to_730x.py
index 1bea0aa3..d5dcdd5d 100644
--- a/src/design/plone/contenttypes/upgrades/to_730x.py
+++ b/src/design/plone/contenttypes/upgrades/to_730x.py
@@ -132,3 +132,29 @@ def to_7306(context):
             if behavior not in behaviors:
                 behaviors.append(behavior)
                 portal_type.behaviors = tuple(behaviors)
+
+
+def to_7307(context):
+    logger.info("Update registry")
+    update_registry(context)
+    logger.info("Add new effectivestart (DateRecurringIndex) index")
+
+    class extra:
+        recurdef = "recurrence"
+        until = ""
+
+    name = "effectivestart"
+    catalog = api.portal.get_tool(name="portal_catalog")
+    catalog.addIndex(name, "DateRecurringIndex", extra=extra())
+    logger.info("Catalog DateRecurringIndex {} created.".format(name))
+
+
+def to_7308(context):
+    logger.info("Reindex Events")
+    pc = api.portal.get_tool(name="portal_catalog")
+    brains = pc(portal_type="Event")
+    tot = len(brains)
+    for i, brain in enumerate(brains):
+        if i % 15 == 0:
+            logger.info("Progress: {}/{}".format(i, tot))
+        brain.getObject().reindexObject(idxs=["effectivestart"])