diff -r -U4 ntp-stable-4.2.0a-20040617/libntp/systime.c ntp-stable-4.2.0a-20040617_sa/libntp/systime.c
--- ntp-stable-4.2.0a-20040617/libntp/systime.c	2004-05-25 12:02:24.000000000 +0100
+++ ntp-stable-4.2.0a-20040617_sa/libntp/systime.c	2009-01-13 16:26:10.000000000 +0000
@@ -8,8 +8,14 @@
 #include "ntp_fp.h"
 #include "ntp_syslog.h"
 #include "ntp_unixtime.h"
 #include "ntp_stdlib.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
 
 #ifdef SIM
 #include "ntpsim.h"
 #endif /*SIM */
@@ -43,8 +49,43 @@
 double	sys_tick = 1e-6;	/* 1 us tickadj() */
 #endif
 double	sys_residual = 0;	/* adjustment residue (s) */
 
+static int sys_offset_read = 0;
+static long sys_offset;
+long get_sysoffset(void) {
+	int fd;
+	if (!sys_offset_read) {
+		errno = 0;
+		fd = open("/etc/ntpoffset", O_RDONLY);
+		if (fd >= 0) {
+			char buf[51];
+			long tmp;
+			int count = read(fd, buf, 50);
+			if (count > 0 && count < 50) {
+				buf[51] = 0;
+				errno = 0;
+				tmp = strtol(buf, (char **)NULL, 10);
+				if (errno == 0) {
+					sys_offset = tmp;
+					sys_offset_read = 1;
+				} else {
+					msyslog(LOG_ERR, "/etc/ntpoffset error(strtol): value=%ld errno=%d", tmp, errno);
+				}
+			} else {
+				msyslog(LOG_ERR, "/etc/ntpoffset error(read): read=%d errno=%d", count, errno);
+			}
+			close(fd);
+		} else if (errno == 2) {
+			sys_offset = 0;
+			sys_offset_read = 1;
+		} else {
+			msyslog(LOG_ERR, "/etc/ntpoffset error(open): errno=%d", errno);
+		}
+	}
+	return sys_offset;
+}
+
 #ifndef SIM
 
 /*
  * get_systime - return system time in NTP timestamp format.
@@ -81,8 +122,10 @@
 	dtemp = tv.tv_usec / 1e6;
 
 #endif /* HAVE_CLOCK_GETTIME || HAVE_GETCLOCK */
 
+	now->l_i -= get_sysoffset();
+
 	/*
 	 * Renormalize to seconds past 1900 and fraction.
 	 */
 	dtemp += sys_residual;
@@ -112,8 +155,10 @@
 	double	dtemp;
 	long	ticks;
 	int	isneg = 0;
 
+	now += get_sysoffset();
+
 	/*
 	 * Most Unix adjtime() implementations adjust the system clock
 	 * in microsecond quanta, but some adjust in 10-ms quanta. We
 	 * carefully round the adjustment to the nearest quantum, then
@@ -166,8 +211,10 @@
 #if defined(HAVE_CLOCK_GETTIME) || defined(HAVE_GETCLOCK)
 	struct timespec ts;
 #endif
 
+	now += get_sysoffset();
+
 	dtemp = sys_residual + now;
 	if (dtemp < 0) {
 		isneg = 1;
 		dtemp = - dtemp;
@@ -190,8 +237,9 @@
 #else /*  not HAVE_GETCLOCK */
 	(void) GETTIMEOFDAY(&timetv, (struct timezone *)0);
 #endif /* not HAVE_GETCLOCK */
 
+	timetv.tv_sec -= get_sysoffset();
 	oldtimetv = timetv;
 
 #ifdef DEBUG
 	if (debug)