Update index.html

Enforce timezone and detail time.

index.html

@@ -175,7 +175,7 @@ <h2>Bonus Tool: <code>.ics</code> file Generator</h2>
   <button onclick="get_ics_material()" type="button" class="btn btn-warning">Get .ics</button>
   <hr class="mt-4 mb-4">
   <span>Hosting on <a href="https://pages.github.com/">GitHub Pages</a> , content delivered by <a href="https://www.cloudflare.com/">Cloudflare</a> and <a href="https://www.jsdelivr.com/">jsDelivr</a>.</span>
-  <p class="mb-5">Project by <a href="https://uichcc.com">UICHCC</a>, <a href="https://github.com/UICHCC/timetable-to-bg">Open Source at GitHub</a>; Current Version: <span class="text-success">v1.5</span> </p>
+  <p class="mb-5">Project by <a href="https://uichcc.com">UICHCC</a>, <a href="https://github.com/UICHCC/timetable-to-bg">Open Source at GitHub</a>; Current Version: <span class="text-success">v1.6</span> </p>
 
 </div>
 <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
@@ -214,6 +214,9 @@ <h2>Bonus Tool: <code>.ics</code> file Generator</h2>
       return;
     }
 
+    startDate = startDate + " 08:00:00 CST"
+    endDate = endDate + " 23:00:00 CST"
+    // enforce timezone
 
     function getAllDate(weekday, startD, endD){
       var start = new Date(startD);