diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/TimeDimensionType.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/TimeDimensionType.java
new file mode 100644
index 0000000..71a5ea2
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/shared/tr/column/TimeDimensionType.java
@@ -0,0 +1,23 @@
+package org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column;
+
+public enum TimeDimensionType {
+	Day("Day"), 
+	Month("Month"), 
+	Quarter("Quarter"), 
+	Year("Year");
+	
+	/**
+	 * 
+	 * @param id
+	 */
+	private TimeDimensionType(final String time) {
+		this.time = time;
+	}
+
+	private final String time;
+	
+	@Override
+	public String toString() {
+		return time;
+	}
+}