diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
index 76f968f6702a..aac8b5cb8fb5 100644
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -38,7 +38,7 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
-# 2016mmdd: new clang import which bumps version from 3.9.0 to 3.9.1.
+# 20161217: new clang import which bumps version from 3.9.0 to 3.9.1.
 OLD_FILES+=usr/lib/clang/3.9.0/include/sanitizer/allocator_interface.h
 OLD_FILES+=usr/lib/clang/3.9.0/include/sanitizer/asan_interface.h
 OLD_FILES+=usr/lib/clang/3.9.0/include/sanitizer/common_interface_defs.h
diff --git a/UPDATING b/UPDATING
index 5cb0f7c707e3..e5586009ff69 100644
--- a/UPDATING
+++ b/UPDATING
@@ -51,7 +51,7 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12.x IS SLOW:
 
 ****************************** SPECIAL WARNING: ******************************
 
-2016mmdd:
+20161217:
 	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.1.
 	Please see the 20141231 entry below for information about prerequisites
 	and upgrading, if you are not already using clang 3.5.0 or higher.