diff -ruN htpdate-0.8.0-old/htpdate.c htpdate-0.8.0-new/htpdate.c
--- htpdate-0.8.0-old/htpdate.c	2005-05-26 23:32:18.000000000 +0200
+++ htpdate-0.8.0-new/htpdate.c	2005-06-02 04:33:33.000000000 +0200
@@ -243,7 +243,7 @@
 	printf("htpdate version %s\n", version);
 	printf("\
 Usage: htpdate [-0|-1] [-a|-q|-s] [-d|-D] [-h|-l] [-i pid file] [-m minpoll]\n\
-        [-M maxpoll] [-P <proxyserver>[:port]] <host[:port]> ...\n\n\
+        [-M maxpoll] [-C limit] [-P <proxyserver>[:port]] <host[:port]> ...\n\n\
   -0    HTTP/1.0 request (default)\n\
   -1    HTTP/1.1 request\n\
   -a    adjust time smoothly\n\
@@ -257,6 +257,8 @@
   -m    minimum poll interval (2^m)\n\
   -M    maximum poll interval (2^M)\n\
   -P    proxy server\n\
+  -C    time delta limit in server responses (in seconds)\n\
+          default: 1 year, unlimited: 0\n\
   host  web server hostname or ip address\n\
   port  port number (default 80 and 8080 for proxy server)\n\n");
 
@@ -271,6 +273,7 @@
 	int					port, proxyport = 8080;
 	int					sumtime, numservers, validtime, goodtime, mean, i;
 	double				timeavg;
+	int					timedeltalimit = YEAR;
 	unsigned int		nap = 0, when = 500000;
 	unsigned int		minsleep = 10, maxsleep = 18, sleeptime = minsleep;
 	char				setmode = 0, httpversion = 0, try, param;
@@ -283,7 +286,7 @@
 
 
 	/* Parse the command line switches and arguments */
-	while ( (param = getopt(argc, argv, "01adhi:lm:qsDM:P:") ) != -1)
+	while ( (param = getopt(argc, argv, "01adhi:lm:qsDM:P:C:") ) != -1)
 	switch (param)
 	{
 		case '0':			/* adjust time */
@@ -340,6 +343,12 @@
 				}
 			}
 			break;
+		case 'C':			/* time delta limit in server responses */
+			if ( (timedeltalimit = atoi(optarg) ) < 0 ) {
+				printlog( 1, "Invalid time delta limit" );
+				exit(1);
+			}
+			break;
 		case '?':
 			return 1;
 		default:
@@ -458,10 +467,12 @@
 			try--;
 		} while ( timestamp && try && daemonize );
 
-		/* Only include valid responses in timedelta[], |delta time| < year */
-		if ( ( timestamp > -YEAR ) && ( timestamp < YEAR ) ) {
-			timedelta[validtime] = timestamp;
+		timedelta[validtime] = timestamp;
+		/* Only include valid responses in timedelta[], |delta time| < validlimit */
+		if ( ( timedeltalimit == 0 ) || ( ( timestamp > -timedeltalimit ) && ( timestamp < timedeltalimit ) ) ) {
 			validtime++;
+		} else {
+			printlog( 0, "Invalid server response (host: %s, time delta: %d, limit: %d)", host, timestamp, timedeltalimit);
 		}
 
 		/* Sleep for a while, unless we detected a time offset */