diff --git a/client/src/Utils.tsx b/client/src/Utils.tsx
index cb7b793..7b89f51 100644
--- a/client/src/Utils.tsx
+++ b/client/src/Utils.tsx
@@ -1,3 +1,5 @@
+import {DepartureTime} from "../../types";
+
 const TOKEN_KEY = "token";
 
 /**
@@ -43,3 +45,15 @@ export function getHumanDateTime(datetime: Date) {
         return `${day}.${month}.${year} ${hours}:${minutes}`;
     }
 }
+
+/**
+ * Vrátí true, pokud je předaný čas větší než aktuální čas.
+ */
+export function isInTheFuture(time: DepartureTime) {
+    const now = new Date();
+    const currentHours = now.getHours();
+    const currentMinutes = now.getMinutes();
+    const [hours, minutes] = time.split(':').map(Number);
+    return hours > currentHours || (hours === currentHours && minutes > currentMinutes);
+}
+