Index: src/OFDate.m
==================================================================
--- src/OFDate.m
+++ src/OFDate.m
@@ -30,10 +30,12 @@
 #endif
 
 #import "OFInitializationFailedException.h"
 #import "OFInvalidArgumentException.h"
 #import "OFOutOfRangeException.h"
+
+#import "macros.h"
 
 #if (!defined(HAVE_GMTIME_R) || !defined(HAVE_LOCALTIME_R)) && \
     defined(OF_THREADS)
 static OFMutex *mutex;
 #endif
@@ -245,10 +247,35 @@
 	if (((OFDate*)obj)->sec != sec || ((OFDate*)obj)->usec != usec)
 		return NO;
 
 	return YES;
 }
+
+- (uint32_t)hash
+{
+	uint32_t hash;
+
+	OF_HASH_INIT(hash);
+
+	OF_HASH_ADD(hash, (sec >> 56) & 0xFF);
+	OF_HASH_ADD(hash, (sec >> 48) & 0xFF);
+	OF_HASH_ADD(hash, (sec >> 40) & 0xFF);
+	OF_HASH_ADD(hash, (sec >> 32) & 0xFF);
+	OF_HASH_ADD(hash, (sec >> 24) & 0xFF);
+	OF_HASH_ADD(hash, (sec >> 16) & 0xFF);
+	OF_HASH_ADD(hash, (sec >> 8) & 0xFF);
+	OF_HASH_ADD(hash, sec & 0xFF);
+
+	OF_HASH_ADD(hash, (usec >> 24) & 0xFF);
+	OF_HASH_ADD(hash, (usec >> 16) & 0xFF);
+	OF_HASH_ADD(hash, (usec >> 8) & 0xFF);
+	OF_HASH_ADD(hash, usec & 0xFF);
+
+	OF_HASH_FINALIZE(hash);
+
+	return hash;
+}
 
 - copy
 {
 	return [self retain];
 }