diff --git a/ChangeLog b/ChangeLog
index 4964df6e1..b01bab098 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2013-10-15  Fred Kiefer <FredKiefer@gmx.de>
+
+	* Headers/Foundation/NSDate.h,
+	* Source/NSDate.m:
+	Add 10.6 class method dateWithTimeInterval:sinceDate:
+	Patch by Marcian Lytwyn <marcian.lytwyn@advcsi.com>
+
 2013-10-04  Richard Frith-Macdonald <rfm@gnu.org>
 
         * Source/NSTimeZone.m: Fix bug with byte swapping ... use NSByteOrder.h
diff --git a/Headers/Foundation/NSDate.h b/Headers/Foundation/NSDate.h
index 2172f1ba4..0ac3c1f10 100644
--- a/Headers/Foundation/NSDate.h
+++ b/Headers/Foundation/NSDate.h
@@ -112,6 +112,7 @@ GS_EXPORT const NSTimeInterval NSTimeIntervalSince1970;
  * that of the receiver by the specified interval.
  */
 - (id) dateByAddingTimeInterval: (NSTimeInterval)ti;
++ (id) dateWithTimeInterval: (NSTimeInterval)seconds sinceDate: (NSDate*)date;
 #endif
 
 #if OS_API_VERSION(GS_API_MACOSX, GS_API_LATEST)
diff --git a/Source/NSDate.m b/Source/NSDate.m
index 080c25c97..597c9d31c 100644
--- a/Source/NSDate.m
+++ b/Source/NSDate.m
@@ -974,6 +974,15 @@ otherTime(NSDate* other)
     seconds]);
 }
 
+/**
+ * Returns an autoreleased instance with the offset from the given date.
+ */
++ (id) dateWithTimeInterval: (NSTimeInterval)seconds sinceDate: (NSDate*)date
+{
+  return AUTORELEASE([[self alloc] initWithTimeInterval: seconds
+                                              sinceDate: date]);
+}
+
 /**
  * Returns an autoreleased instance with th date/time set in the far
  * future.