diff --git a/client/src/components/Planner/DayDetailPanel.tsx b/client/src/components/Planner/DayDetailPanel.tsx
index 8ef2282b..9487f402 100644
--- a/client/src/components/Planner/DayDetailPanel.tsx
+++ b/client/src/components/Planner/DayDetailPanel.tsx
@@ -66,7 +66,11 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
   const isFahrenheit = useSettingsStore(s => s.settings.temperature_unit) === 'fahrenheit'
   const is12h = useSettingsStore(s => s.settings.time_format) === '12h'
   const blurCodes = useSettingsStore(s => s.settings.blur_booking_codes)
-  const fmtTime = (v) => formatTime12(v, is12h)
+  const fmtTime = (v) => {
+    if (!v) return v
+    if (v.includes('T')) return new Date(v).toLocaleTimeString(locale, { hour: '2-digit', minute: '2-digit', hour12: is12h })
+    return formatTime12(v, is12h)
+  }
   const unit = isFahrenheit ? '°F' : '°C'
   const collapsed = collapsedProp
   const toggleCollapse = () => onToggleCollapse?.()
diff --git a/client/src/components/Planner/DayPlanSidebar.tsx b/client/src/components/Planner/DayPlanSidebar.tsx
index 64049e89..b1eda2d3 100644
--- a/client/src/components/Planner/DayPlanSidebar.tsx
+++ b/client/src/components/Planner/DayPlanSidebar.tsx
@@ -1576,7 +1576,10 @@ const DayPlanSidebar = React.memo(function DayPlanSidebar({
                                       {res.reservation_time?.includes('T') && (
                                         <span style={{ fontWeight: 400 }}>
                                           {new Date(res.reservation_time).toLocaleTimeString(locale, { hour: '2-digit', minute: '2-digit', hour12: timeFormat === '12h' })}
-                                          {res.reservation_end_time && ` – ${res.reservation_end_time}`}
+                                          {res.reservation_end_time && ` – ${(() => {
+                                            const endStr = res.reservation_end_time.includes('T') ? res.reservation_end_time : (res.reservation_time.split('T')[0] + 'T' + res.reservation_end_time)
+                                            return new Date(endStr).toLocaleTimeString(locale, { hour: '2-digit', minute: '2-digit', hour12: timeFormat === '12h' })
+                                          })()}`}
                                         </span>
                                       )}
                                       {(() => {