fix(api_handler): fix wrong date being shown for journeys going past midnight

lib/api_handler.dart

@@ -5,14 +5,7 @@ import 'dart:core';
 import 'dart:convert';
 
 import 'transport_helper.dart';
-
-String timeOf(DateTime fullDT) {
-  // doing it this way so we always get two digits on the hour
-  String full = fullDT.toString();
-  List<String> splits = full.split(" ")[1].split(":");
-  String time = '${splits[0]}:${splits[1]}';
-  return time;
-}
+import 'utilities.dart';
 
 class ApiHandler {
   // TODO: Split next line for better Error Handling
@@ -79,7 +72,7 @@ class ApiHandler {
   static Future<List<Departure>> departures(
     String stationId, {
     int? maxDepartures = -1,
-    DateTime? time,
+    DateTime? datetime,
     int? duration = 0,
   }) async {
     String urlPath = '/api/fahrinfo/latest/departureBoard';
@@ -88,8 +81,9 @@ class ApiHandler {
     Uri url = Uri.https(baseUrl, urlPath, {
       'accessId': accessID,
       'id': stationString,
+      'date': dateOf(datetime ?? DateTime.now()),
       'time': timeOf(
-        time ?? DateTime.now(),
+        datetime ?? DateTime.now(),
       ), //time from which departures will be shown
       'duration': duration.toString(), //interval time in minutes
       'maxJourneys': maxDepartures.toString(),