--- /dev/null
+# This file is part of systemd.
+#
+# systemd 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.
+
+[Unit]
+Description=Update RTC With System Clock
+DefaultDependencies=no
+Before=poweroff.service reboot.service halt.service killall.service
+
+[Service]
+Type=oneshot
+ExecStart=/sbin/hwclock --systohc
+
+[Install]
+WantedBy=shutdown.target