diff --git a/GIM_site/WebUserControls/mod_elencoMtzProg.ascx.cs b/GIM_site/WebUserControls/mod_elencoMtzProg.ascx.cs
index d5ac476..49d7a0e 100644
--- a/GIM_site/WebUserControls/mod_elencoMtzProg.ascx.cs
+++ b/GIM_site/WebUserControls/mod_elencoMtzProg.ascx.cs
@@ -219,6 +219,7 @@ public partial class mod_elencoMtzProg : ApplicationUserControl
     {
         if (!Page.IsPostBack)
         {
+            checkDate();
             hlExportExcel.Text = traduci("hlExportExcel");
             hlExportExcel.NavigateUrl = "~/ExcelExportMtzPrev";
             modoInsertMtzPrg = false;
@@ -232,6 +233,27 @@ public partial class mod_elencoMtzProg : ApplicationUserControl
         btnShowNew.Visible = isWritable();
         btnMassEdit.Visible = isWritable();
     }
+
+    private void checkDate()
+    {
+        // cerco periodo, se non c'è imposto a 1 mese...
+        intervalloDate _intervallo;
+        try
+        {
+            _intervallo = (intervalloDate)Session["_intervallo"];
+        }
+        catch
+        {
+            _intervallo = new intervalloDate();
+            // in base al tipo intervallo (futuro/all) decido cosa mostrare...
+            _intervallo.fine = DateTime.Now.Subtract(DateTime.Now.TimeOfDay).AddDays(1);
+            _intervallo.inizio = _intervallo.fine.AddMonths(-1);
+            Session["_intervallo"] = _intervallo;
+            Session["_inizio"] = _intervallo.inizio;
+            Session["_fine"] = _intervallo.fine;
+        }
+    }
+
     /// <summary>
     /// modalità insert mtz prog
     /// </summary>