--- zotnet/tws/dtime.c.orig	Tue Feb  9 20:30:00 1999
+++ zotnet/tws/dtime.c	Tue Jan  4 20:46:46 2000
@@ -170,7 +170,7 @@
     tw.tw_hour = tm -> tm_hour;
     tw.tw_mday = tm -> tm_mday;
     tw.tw_mon = tm -> tm_mon;
-    tw.tw_year = tm -> tm_year + CENTURY;
+    tw.tw_year = tm -> tm_year + 1900;
     tw.tw_wday = tm -> tm_wday;
     tw.tw_yday = tm -> tm_yday;
     if (tm -> tm_isdst)
@@ -212,7 +212,7 @@
     tw.tw_hour = tm -> tm_hour;
     tw.tw_mday = tm -> tm_mday;
     tw.tw_mon = tm -> tm_mon;
-    tw.tw_year = tm -> tm_year + CENTURY;
+    tw.tw_year = tm -> tm_year + 1900;
     tw.tw_wday = tm -> tm_wday;
     tw.tw_yday = tm -> tm_yday;
     if (tm -> tm_isdst)
@@ -370,12 +370,14 @@
 	    || (min = tw -> tw_min) < 0 || min > 59
 	    || (hour = tw -> tw_hour) < 0 || hour > 23
 	    || (mday = tw -> tw_mday) < 1 || mday > 31
-	    || (mon = tw -> tw_mon + 1) < 1 || mon > 12)
+	    || (mon = tw -> tw_mon + 1) < 1 || mon > 12
+	    || (year = tw -> tw_year) < 0)
 	return (tw -> tw_clock = -1L);
-    year = tw -> tw_year;
 
     result = 0L;
-    if (year < 100)
+    if (year < 69)
+	year += CENTURY + 100;
+    else if (year < 100)
 	year += CENTURY;
     for (i = 1970; i < year; i++)
 	result += dysize (i);