diff --git a/projects/Lang/63/org/apache/commons/lang/time/DurationFormatUtils.java b/projects/Lang/63/org/apache/commons/lang/time/DurationFormatUtils.java
index 127b927..3a9d9f6 100644
--- a/projects/Lang/63/org/apache/commons/lang/time/DurationFormatUtils.java
+++ b/projects/Lang/63/org/apache/commons/lang/time/DurationFormatUtils.java
@@ -303,25 +303,20 @@ public static String formatPeriod(long startMillis, long endMillis, String forma
             days -= 1;
         }
         while (days < 0) {
-            days += 31;
+            end.add(Calendar.MONTH, -1);
+            days += end.getActualMaximum(Calendar.DAY_OF_MONTH);
 //days += 31; // TODO: Need tests to show this is bad and the new code is good.
 // HEN: It's a tricky subject. Jan 15th to March 10th. If I count days-first it is 
 // 1 month and 26 days, but if I count month-first then it is 1 month and 23 days.
 // Also it's contextual - if asked for no M in the format then I should probably 
 // be doing no calculating here.
             months -= 1;
+            end.add(Calendar.MONTH, 1);
         }
         while (months < 0) {
             months += 12;
             years -= 1;
         }
-        milliseconds -= reduceAndCorrect(start, end, Calendar.MILLISECOND, milliseconds);
-        seconds -= reduceAndCorrect(start, end, Calendar.SECOND, seconds);
-        minutes -= reduceAndCorrect(start, end, Calendar.MINUTE, minutes);
-        hours -= reduceAndCorrect(start, end, Calendar.HOUR_OF_DAY, hours);
-        days -= reduceAndCorrect(start, end, Calendar.DAY_OF_MONTH, days);
-        months -= reduceAndCorrect(start, end, Calendar.MONTH, months);
-        years -= reduceAndCorrect(start, end, Calendar.YEAR, years);
 
         // This next block of code adds in values that 
         // aren't requested. This allows the user to ask for the 
@@ -429,18 +424,6 @@ static String format(Token[] tokens, int years, int months, int days, int hours,
         }
         return buffer.toString();
     }
-    static int reduceAndCorrect(Calendar start, Calendar end, int field, int difference) {
-        end.add( field, -1 * difference );
-        int endValue = end.get(field);
-        int startValue = start.get(field);
-        if (endValue < startValue) {
-            int newdiff = startValue - endValue;
-            end.add( field, newdiff );
-            return newdiff;
-        } else {
-            return 0;
-        }
-    }
 
     static final Object y = "y";
     static final Object M = "M";