diff --git a/src/components/TimeLine/utils.js b/src/components/TimeLine/utils.js
index 3bf3de2..aff2e91 100644
--- a/src/components/TimeLine/utils.js
+++ b/src/components/TimeLine/utils.js
@@ -184,19 +184,30 @@ function getIconFromText(text) {
   return transportIcons["walk"];
 }
 
+function convertTimeToMinutes(timeString) {
+  // String in Teile zerlegen
+  const parts = timeString.split(':');
+  const hours = parseInt(parts[0]);
+  const minutes = parseInt(parts[1]);
+  const seconds = parseInt(parts[2]);   
+
+  // Berechnung der Gesamtminuten
+  const totalMinutes = hours * 60 + minutes + seconds / 60;
+  return totalMinutes;
+}
+
 export const createReturnEntries = (entries, connection, t) => {
   let toReturn = [];
   if (entries && entries.length > 0) {
     let _entries = entries.filter((e) => e && e.length > 0);
     let newStart = "     ";
+
     if (connection.totour_track_duration) {
       newStart = dayjs(connection.return_departure_datetime)
-        .subtract(
-          dayjs.duration(connection["fromtour_track_duration"]).asMinutes(),
-          "minute"
-        )
+        .subtract(convertTimeToMinutes(connection["fromtour_track_duration"]))
         .format("HH:mm");
     }
+
     toReturn.push(
       getDepartureEntry(`${newStart} ${t("details.ankunft_bei_tourende")}`)
     );
@@ -248,10 +259,7 @@ export const createEntries = (entries, connection, t) => {
     let newStart = "     ";
     if (connection.totour_track_duration) {
       newStart = dayjs(connection.connection_arrival_datetime)
-        .add(
-          dayjs.duration(connection["totour_track_duration"]).asMinutes(),
-          "minute"
-        )
+        .add(convertTimeToMinutes(connection["totour_track_duration"]))
         .format("HH:mm");
     }
     toReturn.push(
diff --git a/src/utils/transformJson.js b/src/utils/transformJson.js
index 58b62a0..da2d58f 100644
--- a/src/utils/transformJson.js
+++ b/src/utils/transformJson.js
@@ -1,6 +1,3 @@
-// import { useTranslation } from "i18next";
-import {formatToHHMM} from "../components/TimeLine/utils";
-
 function getConnectionTypeString(CT) {
  
     const connectionTypes = {
@@ -73,13 +70,23 @@ export function jsonToStringArray(connection, toFrom = "to", t){
         }
 
         if(toFrom === "from"){
-            stringArray.unshift(`  <  ${t('details.std_rueckstiegsdauer_vom_touren_endpunkt', {from_tour_track_duration: formatToHHMM(connection.fromtour_track_duration)})}`) 
+            stringArray.unshift(`  <  ${t('details.std_rueckstiegsdauer_vom_touren_endpunkt', {from_tour_track_duration: convertTimeToHHMM(connection.fromtour_track_duration)})}`) 
         }else if(toFrom === "to"){
-            stringArray.push(`  >  ${t('details.std_zustiegsdauer_zum_touren_ausgangspunkt', {totour_track_duration : formatToHHMM(connection.totour_track_duration) })}`) 
+            stringArray.push(`  >  ${t('details.std_zustiegsdauer_zum_touren_ausgangspunkt', {totour_track_duration : convertTimeToHHMM(connection.totour_track_duration) })}`) 
         }
     }
 
-    return stringArray;
-   
-    
+    return stringArray;  
 }
+
+function convertTimeToHHMM(timeString) {
+    // String in Teile zerlegen
+    const parts = timeString.split(':');
+    const hours = parseInt(parts[0]);
+    const minutes = parseInt(parts[1]);
+  
+    // Stunden und Minuten formatieren
+    const formattedTime = `${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}`;
+  
+    return formattedTime;
+}
\ No newline at end of file