diff --git a/components/ratgdo/ratgdo.cpp b/components/ratgdo/ratgdo.cpp
index e2da7ee..cd2da80 100644
--- a/components/ratgdo/ratgdo.cpp
+++ b/components/ratgdo/ratgdo.cpp
@@ -133,6 +133,8 @@ namespace ratgdo {
             return "pair_2";
         case 0x48b:
             return "get_openings";
+        case 0x40a:
+            return "ttc"; // Time to close
         default:
             return "unknown";
         }
diff --git a/components/ratgdo/ratgdo.h b/components/ratgdo/ratgdo.h
index 87f9906..807a6e0 100644
--- a/components/ratgdo/ratgdo.h
+++ b/components/ratgdo/ratgdo.h
@@ -101,8 +101,11 @@ namespace ratgdo {
 
             PAIR_2 = 0x400,
             PAIR_2_RESP = 0x401,
+            TTC = 0x40a, // Time to close
+
             GET_OPENINGS = 0x48b,
             OPENINGS = 0x48c,
+
         };
     }