diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
index b1f84e4..b0366fc 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/index.html
@@ -730,10 +730,10 @@
           </table>
           <div class="sch-row sch-add-row">
             <label class="sch-label">Start (UTC)
-              <input type="time" id="scheduler-ts-start" class="status-input" />
+              <input type="time" id="scheduler-ts-start" class="status-input" title="Set both to 00:00 for all-day" />
             </label>
             <label class="sch-label">End (UTC)
-              <input type="time" id="scheduler-ts-end" class="status-input" />
+              <input type="time" id="scheduler-ts-end" class="status-input" title="Set both to 00:00 for all-day" />
             </label>
             <label class="sch-label">Bookmark
               <select id="scheduler-ts-bookmark" class="status-input" aria-label="Entry bookmark"></select>
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/scheduler.js b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/scheduler.js
index cebe798..2ebb968 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/scheduler.js
+++ b/src/trx-client/trx-frontend/trx-frontend-http/assets/web/plugins/scheduler.js
@@ -278,9 +278,10 @@
     entries.forEach(function (entry, idx) {
       const tr = document.createElement("tr");
       const il = entry.interleave_min ? String(entry.interleave_min) + " min" : "—";
+      const allDay = entry.start_min === entry.end_min;
       tr.innerHTML =
-        '<td>' + minToHHMM(entry.start_min) + '</td>' +
-        '<td>' + minToHHMM(entry.end_min) + '</td>' +
+        '<td>' + (allDay ? "All day" : minToHHMM(entry.start_min)) + '</td>' +
+        '<td>' + (allDay ? "—" : minToHHMM(entry.end_min)) + '</td>' +
         '<td>' + bmName(entry.bookmark_id) + '</td>' +
         '<td>' + escHtml(entry.label || "") + '</td>' +
         '<td>' + il + '</td>' +
diff --git a/src/trx-client/trx-frontend/trx-frontend-http/src/scheduler.rs b/src/trx-client/trx-frontend/trx-frontend-http/src/scheduler.rs
index d89790c..e6ba865 100644
--- a/src/trx-client/trx-frontend/trx-frontend-http/src/scheduler.rs
+++ b/src/trx-client/trx-frontend/trx-frontend-http/src/scheduler.rs
@@ -278,7 +278,10 @@ fn grayline_bookmark_id(gl: &GraylineConfig, now_min: f64) -> Option<String> {
 fn entry_is_active(entry: &ScheduleEntry, now_min: f64) -> bool {
     let start = entry.start_min as f64;
     let end = entry.end_min as f64;
-    if start <= end {
+    if start == end {
+        // Equal start and end means all-day (24 h window).
+        true
+    } else if start < end {
         now_min >= start && now_min < end
     } else {
         // Spans midnight.