diff --git a/source/notes/1-27.ptx b/source/notes/1-27.ptx
index ad9982b..112ae5b 100644
--- a/source/notes/1-27.ptx
+++ b/source/notes/1-27.ptx
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <section xml:id="notes-01-27">
-  <title>Thursday, Jan 27</title>
+  <title>Tuesday, Jan 27</title>
 
   <introduction>
     <p>