diff --git a/os/POST_INSTALL.txt b/os/POST_INSTALL.txt
new file mode 100644
index 000000000..26c0e95cc
--- /dev/null
+++ b/os/POST_INSTALL.txt
@@ -0,0 +1,9 @@
+Set the clock with:
+
+date 103112332009
+
+(This sets to October (10), 31, 12:33AM, year 2009.)
+
+Sync it with the hardware clock:
+
+hwclock --systohc