Base trip timezone differences on trip dates and remove live local-time column

templates/trip_page.html

@@ -108,7 +108,6 @@
               <th>Destination</th>
               <th>Timezone</th>
               <th>Difference from UK</th>
-              <th>Current local time</th>
             </tr>
           </thead>
           <tbody>
@@ -117,7 +116,6 @@
               <td>{{ item.destination_label }}</td>
               <td>{{ item.timezone or "Unknown" }}</td>
               <td class="destination-offset">{{ item.offset_display }}</td>
-              <td class="destination-time" {% if item.timezone %}data-timezone="{{ item.timezone }}"{% endif %}>{{ item.current_time or "Unknown" }}</td>
             </tr>
           {% endfor %}
           </tbody>
@@ -490,22 +488,5 @@ var routes = {{ routes | tojson }};
 
 build_map("map", coordinates, routes);
 
-function updateDestinationTimes() {
-  for (const el of document.querySelectorAll(".destination-time[data-timezone]")) {
-    const tz = el.dataset.timezone;
-    el.textContent = new Intl.DateTimeFormat("en-GB", {
-      timeZone: tz,
-      weekday: "short",
-      hour: "2-digit",
-      minute: "2-digit",
-      second: "2-digit",
-      hour12: false
-    }).format(new Date());
-  }
-}
-
-updateDestinationTimes();
-setInterval(updateDestinationTimes, 1000);
-
 </script>
 {% endblock %}