diff --git a/CHANGELOG b/CHANGELOG
index d8c3cca249..7c75ebe605 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Handle datetime_field in xxx2Many
 * Add new safe_eval
 * Ask previous password for set_preferences on password change
 * Add "Statusbar" option
diff --git a/tryton/gui/window/view_form/model/field.py b/tryton/gui/window/view_form/model/field.py
index 0bd06c242b..115dd82503 100644
--- a/tryton/gui/window/view_form/model/field.py
+++ b/tryton/gui/window/view_form/model/field.py
@@ -460,7 +460,8 @@ class O2MField(CharField):
         from group import ModelRecordGroup
         mod = ModelRecordGroup(self.attrs['relation'], {}, model.window,
                 parent=model, parent_name=self.attrs.get('relation_field', ''),
-                context=self.context)
+                context=self.context,
+                parent_datetime_field=self.attrs.get('datetime_field'))
         mod.signal_connect(mod, 'model-changed', self._model_changed)
         return mod
 
@@ -518,7 +519,8 @@ class O2MField(CharField):
         from group import ModelRecordGroup
         mod = ModelRecordGroup(self.attrs['relation'], {}, model.window,
                 parent=model, parent_name=self.attrs.get('relation_field', ''),
-                context=self.context)
+                context=self.context,
+                parent_datetime_field=self.attrs.get('datetime_field'))
         mod.signal_connect(mod, 'model-changed', self._model_changed)
         model.value[self.name] = mod
         #self.internal.signal_connect(self.internal, 'model-changed',
@@ -550,7 +552,8 @@ class O2MField(CharField):
         model.value[self.name] = ModelRecordGroup(
                 self.attrs['relation'], fields, model.window, parent=model,
                 parent_name=self.attrs.get('relation_field', ''),
-                context=self.context)
+                context=self.context,
+                parent_datetime_field=self.attrs.get('datetime_field'))
         model.value[self.name].signal_connect(model.value[self.name],
                 'model-changed', self._model_changed)
         mod = None
diff --git a/tryton/gui/window/view_form/model/group.py b/tryton/gui/window/view_form/model/group.py
index 423a39f788..89de021465 100644
--- a/tryton/gui/window/view_form/model/group.py
+++ b/tryton/gui/window/view_form/model/group.py
@@ -73,11 +73,13 @@ class ModelList(list):
 class ModelRecordGroup(SignalEvent):
 
     def __init__(self, resource, fields, window, ids=None, parent=None,
-            parent_name='', context=None, readonly=False):
+            parent_name='', context=None, readonly=False,
+            parent_datetime_field=None):
         super(ModelRecordGroup, self).__init__()
         self.window = window
         self.parent = parent
         self.parent_name = parent_name
+        self.parent_datetime_field = parent_datetime_field
         self._context = context or {}
         self.resource = resource
         self.rpc = RPCProxy(resource)
@@ -223,6 +225,9 @@ class ModelRecordGroup(SignalEvent):
     def _get_context(self):
         ctx = rpc.CONTEXT.copy()
         ctx.update(self._context)
+        if self.parent_datetime_field:
+            ctx['_datetime'] = self.parent.get_eval(check_load=False)\
+                    [self.parent_datetime_field]
         return ctx
     context = property(_get_context)
 
diff --git a/tryton/gui/window/view_form/view/form_gtk/many2many.py b/tryton/gui/window/view_form/view/form_gtk/many2many.py
index c8ae8277d6..3ffe9046f3 100644
--- a/tryton/gui/window/view_form/view/form_gtk/many2many.py
+++ b/tryton/gui/window/view_form/view/form_gtk/many2many.py
@@ -146,7 +146,17 @@ class Many2Many(WidgetInterface):
         ids = []
         if model_field:
             ids = model_field.get_client(model)
-        if ids != self.old:
+        reload = False
+        if self.attrs.get('datetime_field'):
+            datetime_field = model.get_eval(check_load=False)\
+                    [self.attrs['datetime_field']]
+            if self.screen.context.get('_datetime') != datetime_field:
+                self.screen.context['_datetime'] = datetime_field
+                reload = True
+            if self.screen.models.context.get('_datetime') != datetime_field:
+                self.screen.models._context['_datetime'] = datetime_field
+                reload = True
+        if ids != self.old or reload:
             self.screen.clear()
             self.screen.load(ids, set_cursor=False)
             self.old = ids
diff --git a/tryton/gui/window/view_form/view/form_gtk/one2many.py b/tryton/gui/window/view_form/view/form_gtk/one2many.py
index dda701e104..3aa51b13d7 100644
--- a/tryton/gui/window/view_form/view/form_gtk/one2many.py
+++ b/tryton/gui/window/view_form/view/form_gtk/one2many.py
@@ -579,7 +579,8 @@ class One2Many(WidgetInterface):
                 domain = modelfield.domain_get(self._view.model)
             dia = Dialog(self.attrs['relation'], parent=self._view.model,
                     model=self.screen.current_model, attrs=self.attrs,
-                    window=self._window, readonly=readonly, domain=domain)
+                    window=self._window, readonly=readonly, domain=domain,
+                    model_ctx=self.screen.models.context)
             res, value = dia.run()
             dia.destroy()