diff --git a/src/client/types/wrapper.ts b/src/client/types/wrapper.ts
index ade7429..639f29c 100644
--- a/src/client/types/wrapper.ts
+++ b/src/client/types/wrapper.ts
@@ -78,6 +78,13 @@ class journey_wrapper {
             }
         }
     }
+    day_cycle() {
+        if (this.sel_day >= this.leg_len() - 1) {
+            this.sel_day = 0;
+        } else {
+            this.day_next()
+        }
+    }
     date_sel(): string {
         if (this.sel_day < 0) return "?";
         let leg = this.leg_get()