diff --git a/src/plugins/monofile.ts b/src/plugins/monofile.ts
index 1d66c618..55e6e71c 100644
--- a/src/plugins/monofile.ts
+++ b/src/plugins/monofile.ts
@@ -24,6 +24,9 @@ import loading from "@/seqta/ui/Loading";
 import { SendNewsPage } from "@/seqta/utils/SendNewsPage";
 import { loadHomePage } from "@/seqta/utils/Loaders/LoadHomePage";
 import { OpenWhatsNewPopup } from "@/seqta/utils/Whatsnew";
+import {
+  updateTimetableTimes,
+} from "@/seqta/utils/updateTimetableTimes";
 
 // JSON content
 import MenuitemSVGKey from "@/seqta/content/MenuItemSVGKey.json";
@@ -241,14 +244,16 @@ async function LoadPageElements(): Promise<void> {
     handleReports,
   );
 
-  /* eventManager.register(
+  eventManager.register(
     "timetableAdded",
     {
       elementType: "div",
       className: "timetablepage",
     },
-    handleTimetable,
-  ) */
+    async () => {
+      await updateTimetableTimes();
+    },
+  );
 
   eventManager.register(
     "noticesAdded",
diff --git a/src/seqta/utils/convertTo12HourFormat.ts b/src/seqta/utils/convertTo12HourFormat.ts
index 8dd6670e..691bea0c 100644
--- a/src/seqta/utils/convertTo12HourFormat.ts
+++ b/src/seqta/utils/convertTo12HourFormat.ts
@@ -3,10 +3,10 @@ export function convertTo12HourFormat(
   noMinutes: boolean = false,
 ): string {
   let [hours, minutes] = time.split(":").map(Number);
-  let period = "AM";
+  let period = "am";
 
   if (hours >= 12) {
-    period = "PM";
+    period = "pm";
     if (hours > 12) hours -= 12;
   } else if (hours === 0) {
     hours = 12;
@@ -17,5 +17,5 @@ export function convertTo12HourFormat(
     hoursStr = hoursStr.substring(1);
   }
 
-  return `${hoursStr}${noMinutes ? "" : `:${minutes.toString().padStart(2, "0")}`} ${period}`;
+  return `${hoursStr}${noMinutes ? "" : `:${minutes.toString().padStart(2, "0")}`}${period}`;
 }
diff --git a/src/seqta/utils/updateTimetableTimes.ts b/src/seqta/utils/updateTimetableTimes.ts
new file mode 100644
index 00000000..3e9a3d5c
--- /dev/null
+++ b/src/seqta/utils/updateTimetableTimes.ts
@@ -0,0 +1,51 @@
+import { settingsState } from "@/seqta/utils/listeners/SettingsState";
+import { convertTo12HourFormat } from "./convertTo12HourFormat";
+import { waitForElm } from "./waitForElm";
+
+
+export async function updateTimetableTimes(): Promise<void> {
+  if (!settingsState.timeFormat) return;
+
+  const timetablePage = document.querySelector(".timetablepage");
+  if (!timetablePage) return;
+
+  // Wait for time elements to exist if page is still loading
+  try {
+    await waitForElm(".timetablepage .time", true, 10);
+  } catch {
+    return;
+  }
+
+  const times = timetablePage.querySelectorAll<HTMLElement>(".times .time");
+  times.forEach((el) => {
+    if (!el.dataset.original) el.dataset.original = el.textContent || "";
+    const original = el.dataset.original;
+    if (!original) return;
+
+    if (settingsState.timeFormat === "12") {
+      el.textContent = convertTo12HourFormat(original, true)
+        .toLowerCase()
+        .replace(" ", "");
+    } else {
+      el.textContent = original;
+    }
+  });
+
+  const entryTimes = timetablePage.querySelectorAll<HTMLElement>(".entry .times");
+  entryTimes.forEach((el) => {
+    if (!el.dataset.original) el.dataset.original = el.textContent || "";
+    const original = el.dataset.original || "";
+    if (!original.includes("–") && !original.includes("-")) return;
+
+    const [start, end] = original.split(/[-–]/).map((p) => p.trim());
+    if (!start || !end) return;
+
+    if (settingsState.timeFormat === "12") {
+      const start12 = convertTo12HourFormat(start).toLowerCase().replace(" ", "");
+      const end12 = convertTo12HourFormat(end).toLowerCase().replace(" ", "");
+      el.textContent = `${start12}–${end12}`;
+    } else {
+      el.textContent = original;
+    }
+  });
+}