diff --git a/src/java/org/apache/commons/lang/time/DateUtils.java b/src/java/org/apache/commons/lang/time/DateUtils.java
index cf8ff0d8f..e70bfd93a 100644
--- a/src/java/org/apache/commons/lang/time/DateUtils.java
+++ b/src/java/org/apache/commons/lang/time/DateUtils.java
@@ -31,7 +31,7 @@ import java.util.TimeZone;
  * @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
  * @author Phil Steitz
  * @since 2.0
- * @version $Id: DateUtils.java,v 1.26 2004/09/07 22:50:45 scolebourne Exp $
+ * @version $Id: DateUtils.java,v 1.27 2004/09/07 23:03:37 scolebourne Exp $
  */
 public class DateUtils {
     
@@ -117,6 +117,28 @@ public class DateUtils {
     public DateUtils() {
     }
 
+    //-----------------------------------------------------------------------
+    /**
+     * <p>Checks if two calendar objects are on the same day ignoring time.</p>
+     *
+     * <p>28 Mar 2002 13:45 and 28 Mar 2002 06:01 would return true.
+     * 28 Mar 2002 13:45 and 12 Mar 2002 13:45 would return false.
+     * </p>
+     * 
+     * @param cal1  the first calendar, not null
+     * @param cal1  the second calendar, not null
+     * @return true if they represent the same day
+     * @throws IllegalArgumentException if either calendar is <code>null</code>
+     */
+    public static boolean isSameDay(Calendar cal1, Calendar cal2) {
+        if (cal1 == null || cal2 == null) {
+            throw new IllegalArgumentException("The date must not be null");
+        }
+        return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
+                cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
+                cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
+    }
+
     //-----------------------------------------------------------------------
     /**
      * <p>Round this date, leaving the field specified as the most
diff --git a/src/test/org/apache/commons/lang/time/DateUtilsTest.java b/src/test/org/apache/commons/lang/time/DateUtilsTest.java
index 94a78a0dc..6b6d0b556 100644
--- a/src/test/org/apache/commons/lang/time/DateUtilsTest.java
+++ b/src/test/org/apache/commons/lang/time/DateUtilsTest.java
@@ -21,6 +21,7 @@ import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.GregorianCalendar;
 import java.util.Iterator;
 import java.util.Locale;
 import java.util.NoSuchElementException;
@@ -151,6 +152,19 @@ public class DateUtilsTest extends TestCase {
         assertEquals(false, Modifier.isFinal(DateUtils.class.getModifiers()));
     }
     
+    //-----------------------------------------------------------------------
+    public void testIsSameDay() {
+        GregorianCalendar cal1 = new GregorianCalendar(2004, 6, 9, 13, 45);
+        GregorianCalendar cal2 = new GregorianCalendar(2004, 6, 9, 13, 45);
+        assertEquals(true, DateUtils.isSameDay(cal1, cal2));
+        cal2.add(Calendar.DAY_OF_YEAR, 1);
+        assertEquals(false, DateUtils.isSameDay(cal1, cal2));
+        cal1.add(Calendar.DAY_OF_YEAR, 1);
+        assertEquals(true, DateUtils.isSameDay(cal1, cal2));
+        cal2.add(Calendar.YEAR, 1);
+        assertEquals(false, DateUtils.isSameDay(cal1, cal2));
+    }
+    
     //-----------------------------------------------------------------------
     /**
      * Tests various values with the round method