diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/EDate.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/EDate.java
index 013b9a1aa..3e2abfb62 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/EDate.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/EDate.java
@@ -13,10 +13,12 @@ import com.mysema.query.types.operation.Ops;
 
 /**
  * EDate represents Date expressions
+ * The date representation is compatible with the Gregorian calendar.
+ * 
+ * @param <D>
  * 
  * @author tiwe
- *
- * @param <D>
+ * @see http://en.wikipedia.org/wiki/Gregorian_calendar
  */
 @SuppressWarnings({"unchecked","serial"})
 public abstract class EDate<D extends Comparable> extends EDateOrTime<D> {
@@ -88,7 +90,7 @@ public abstract class EDate<D extends Comparable> extends EDateOrTime<D> {
     }
     
     /**
-     * Get a month expression (range 1-12)
+     * Get a month expression (range 1-12 / JAN-DEC)
      * 
      * @return
      */
diff --git a/querydsl-core/src/main/java/com/mysema/query/types/expr/EDateTime.java b/querydsl-core/src/main/java/com/mysema/query/types/expr/EDateTime.java
index 02ddb2d9b..2e9394e13 100644
--- a/querydsl-core/src/main/java/com/mysema/query/types/expr/EDateTime.java
+++ b/querydsl-core/src/main/java/com/mysema/query/types/expr/EDateTime.java
@@ -13,10 +13,12 @@ import com.mysema.query.types.operation.Ops;
 
 /**
  * EDateTime represents Date / Time expressions
- * 
- * @author tiwe
+ * The date representation is compatible with the Gregorian calendar.
  *
  * @param <D>
+ *
+ * @author tiwe
+ * @see http://en.wikipedia.org/wiki/Gregorian_calendar
  */
 @SuppressWarnings({"unchecked","serial"})
 public abstract class EDateTime<D extends Comparable> extends EDate<D> {