diff --git a/include/emptime.h b/include/emptime.h
new file mode 100644
index 0000000..a83b29d
--- /dev/null
+++ b/include/emptime.h
@@ -0,0 +1,41 @@
+/*
+ *  Empire - A multi-player, client/server Internet based war game.
+ *  Copyright (C) 1986-2009, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *                           Ken Stevens, Steve McClure
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  ---
+ *
+ *  See files README, COPYING and CREDITS in the root of the source
+ *  tree for related information and legal notices.  It is expected
+ *  that future projects/authors will amend these files as needed.
+ *
+ *  ---
+ *
+ *  emptime.h: Time functions for regression testing and
+ *             replaying journals.
+ *
+ *  Known contributors to this file:
+ *     Ron Koenderink, 2008
+ */
+
+#ifndef EMPTIME_H
+#define EMPTIME_H
+
+#include <time.h>
+
+extern time_t emp_time(time_t *, const char []);
+#endif
diff --git a/src/lib/gen/emptime.c b/src/lib/gen/emptime.c
new file mode 100644
index 0000000..855de99
--- /dev/null
+++ b/src/lib/gen/emptime.c
@@ -0,0 +1,51 @@
+/*
+ *  Empire - A multi-player, client/server Internet based war game.
+ *  Copyright (C) 1986-2009, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ *                           Ken Stevens, Steve McClure
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  ---
+ *
+ *  See files README, COPYING and CREDITS in the root of the source
+ *  tree for related information and legal notices.  It is expected
+ *  that future projects/authors will amend these files as needed.
+ *
+ *  ---
+ *
+ *  emptime.c: Time functions for regression testing and
+ *             replaying journals.
+ *
+ *  Known contributors to this file:
+ *     Ron Koenderink, 2008
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "emptime.h"
+
+time_t
+emp_time(time_t * time_ptr, const char function[])
+{
+    static time_t now = (time_t)100L;
+
+    if (strcmp(function, "update_main") == 0)
+	now += 100L;
+
+    if (time_ptr != NULL)
+	*time_ptr = now;
+
+    return now;
+}
