diff --git a/index.html b/index.html
index 1a99f88..0797e08 100644
--- a/index.html
+++ b/index.html
@@ -56,6 +56,8 @@
                 <select onchange="changed()" id="sel" class="sel_indicate">
                     <option value="0">--------</option>
                     <option value="12">1・2限目(09:00-12:50)</option>
+                    <option value="13">3・4限目(13:30-17:00)</option>
+                    <option value="14">4・5限目(15:20-18:45)</option>
                     <option value="1">1限目(9:00-10:40)</option>
                     <option value="2">2限目(11:10-12:50)</option>
                     <option value="3">3限目(13:30-15:10)</option>
@@ -205,6 +207,8 @@
     if (sel == 1) { from.value= "09:00";  to.value= "10:40"; timechanged();
     } else if (sel == 2) { from.value= "11:10";  to.value= "12:50"; timechanged();
     } else if (sel == 12) { from.value= "09:00";  to.value= "12:50"; timechanged();
+    } else if (sel == 13) { from.value= "13:30";  to.value= "17:00"; timechanged();
+    } else if (sel == 14) { from.value= "15:20";  to.value= "18:45"; timechanged();
     } else if (sel == 3) { from.value= "13:30";  to.value= "15:10"; timechanged();
     } else if (sel == 4) { from.value = "15:20";  to.value = "17:00"; timechanged();
     } else if (sel == 5) { from.value = "17:05";  to.value = "18:45"; timechanged();