--- fmirror-0.8.4.orig/fmirror.c
+++ fmirror-0.8.4/fmirror.c
@@ -3285,7 +3359,7 @@
     long year = tm->tm_year - 70;
     long month = tm->tm_mon; /* 0..11 */
     long day = tm->tm_mday - 1; /* 0..30 */
-    long hour = tm->tm_hour;
+    long hour = tm->tm_hour - 1;
     long min = tm->tm_min;
     long sec = tm->tm_sec; /* 0..59 (+ leap second on bad days) */