diff --git a/backend/routes/todos.js b/backend/routes/todos.js
index fe74127..b0e422e 100644
--- a/backend/routes/todos.js
+++ b/backend/routes/todos.js
@@ -23,7 +23,18 @@ router.get("/", async (req, res) => {
 router.get("/today", async (req, res) => {
   try {
     const { start, end } = getDayRange();
-    const todos = await Todo.find({ dueDate: { $gte: start, $lte: end } }).sort({
+    // Include:
+    // 1. Tasks due today
+    // 2. Overdue tasks (due before today) that are not completed
+    // 3. Tasks with no due date that are not completed
+    const todos = await Todo.find({
+      $or: [
+        { dueDate: { $gte: start, $lte: end } },
+        { dueDate: { $lt: start }, completed: false },
+        { dueDate: { $exists: false }, completed: false },
+        { dueDate: null, completed: false }
+      ]
+    }).sort({
       dueDate: 1,
       createdAt: -1,
     });
diff --git a/backend/routes/weather.js b/backend/routes/weather.js
index f16e761..2e25174 100644
--- a/backend/routes/weather.js
+++ b/backend/routes/weather.js
@@ -45,25 +45,22 @@ router.get("/", async (req, res) => {
 
     const currentData = currentResponse.data;
 
-    // 3. Process Forecast for Today's Min/Max (Seoul Time: UTC+9)
-    // OpenWeatherMap returns timestamps in UTC.
-    // Seoul is UTC+9.
-    const SeoulOffset = 9 * 60 * 60 * 1000;
-    const nowKST = new Date(Date.now() + SeoulOffset);
-    const todayStr = nowKST.toISOString().split("T")[0]; // YYYY-MM-DD in KST
+    // 3. Process Forecast for Today's Min/Max (Rolling 24-hour window for stability)
+    // We use the first 8 segments (3h * 8 = 24h) to ensure we always have a full
+    // day-night cycle of temperatures, providing a stable daily range.
+    const forecastList = forecastResponse.data.list;
+    if (forecastList && forecastList.length > 0) {
+      const next24h = forecastList.slice(0, 8);
 
-    const todayItems = forecastResponse.data.list.filter((item) => {
-      const itemDateKST = new Date(item.dt * 1000 + SeoulOffset);
-      const itemDateStr = itemDateKST.toISOString().split("T")[0];
-      return itemDateStr === todayStr;
-    });
+      // Calculate min/max from forecast
+      let minTemp = Math.min(...next24h.map((item) => item.main.temp_min));
+      let maxTemp = Math.max(...next24h.map((item) => item.main.temp_max));
 
-    if (todayItems.length > 0) {
-      // Find min and max from the 3-hour segments
-      const minTemp = Math.min(...todayItems.map((item) => item.main.temp_min));
-      const maxTemp = Math.max(...todayItems.map((item) => item.main.temp_max));
+      // Also compare with current temperature to ensure the range covers current state
+      const currentTemp = currentData.main.temp;
+      minTemp = Math.min(minTemp, currentTemp);
+      maxTemp = Math.max(maxTemp, currentTemp);
 
-      // Update the response structure
       currentData.main.temp_min = minTemp;
       currentData.main.temp_max = maxTemp;
     }
diff --git a/flutter_app/lib/screens/admin/admin_screen.dart b/flutter_app/lib/screens/admin/admin_screen.dart
index 6f155d5..76a4771 100644
--- a/flutter_app/lib/screens/admin/admin_screen.dart
+++ b/flutter_app/lib/screens/admin/admin_screen.dart
@@ -1559,10 +1559,14 @@ class _TodoManagerTabState extends State<TodoManagerTab> {
                   ),
                 ),
                 subtitle: todo.dueDate != null
-                    ? Text(
-                        todo.dueDate!.toIso8601String().split('T')[0],
-                        style:
-                            const TextStyle(fontSize: 12, color: Colors.grey),
+                    ? Builder(
+                        builder: (context) {
+                          final dueDate = todo.dueDate!;
+                          return Text(
+                            dueDate.toIso8601String().split('T')[0],
+                            style: const TextStyle(fontSize: 12, color: Colors.grey),
+                          );
+                        },
                       )
                     : null,
                 trailing: Row(
diff --git a/flutter_app/lib/services/photo_service.dart b/flutter_app/lib/services/photo_service.dart
index dfd45ad..de44a95 100644
--- a/flutter_app/lib/services/photo_service.dart
+++ b/flutter_app/lib/services/photo_service.dart
@@ -78,13 +78,13 @@ class PhotoService {
   }
 
   Future<String> getGoogleAuthUrl() async {
-    final data = await _client.get("${ApiConfig.photos}/auth/url");
+    final data = await _client.getMap("${ApiConfig.photos}/auth/url");
     return data["url"] as String;
   }
 
   Future<bool> getGoogleStatus() async {
     try {
-      final data = await _client.get("${ApiConfig.photos}/status");
+      final data = await _client.getMap("${ApiConfig.photos}/status");
       return data["connected"] as bool? ?? false;
     } catch (e) {
       return false;
@@ -92,6 +92,6 @@ class PhotoService {
   }
 
   Future<void> disconnectGoogle() async {
-    await _client.get("${ApiConfig.photos}/disconnect");
+    await _client.getMap("${ApiConfig.photos}/disconnect");
   }
 }
diff --git a/flutter_app/lib/services/todo_service.dart b/flutter_app/lib/services/todo_service.dart
index 7c250df..6e663fa 100644
--- a/flutter_app/lib/services/todo_service.dart
+++ b/flutter_app/lib/services/todo_service.dart
@@ -20,14 +20,23 @@ class TodoService {
 
   Future<List<TodoItem>> fetchTodayTodos() async {
     if (ApiConfig.useMockData) {
-      final today = DateTime.now();
-      return MockDataStore.todos.where((todo) => todo.dueDate != null).where((
-        todo,
-      ) {
-        final date = todo.dueDate!;
-        return date.year == today.year &&
-            date.month == today.month &&
-            date.day == today.day;
+      final now = DateTime.now();
+      final today = DateTime(now.year, now.month, now.day);
+      final tomorrow = today.add(const Duration(days: 1));
+
+      return MockDataStore.todos.where((todo) {
+        if (todo.completed) {
+          // If completed, only show if it was due today
+          if (todo.dueDate == null) return false;
+          return todo.dueDate!.isAfter(today.subtract(const Duration(milliseconds: 1))) &&
+                 todo.dueDate!.isBefore(tomorrow);
+        }
+        
+        // If not completed:
+        // 1. No due date -> show
+        // 2. Due today or before -> show
+        if (todo.dueDate == null) return true;
+        return todo.dueDate!.isBefore(tomorrow);
       }).toList();
     }
     final data = await _client.getList("${ApiConfig.todos}/today");
diff --git a/flutter_app/lib/widgets/schedule_list_widget.dart b/flutter_app/lib/widgets/schedule_list_widget.dart
index f60da80..7bb5cdf 100644
--- a/flutter_app/lib/widgets/schedule_list_widget.dart
+++ b/flutter_app/lib/widgets/schedule_list_widget.dart
@@ -112,8 +112,8 @@ class _ScheduleListWidgetState extends State<ScheduleListWidget> {
     final endOfWeek = startOfWeek.add(const Duration(days: 6, hours: 23, minutes: 59, seconds: 59));
 
     final filteredSchedules = _schedules.where((item) {
-      // Overlap check: schedule starts before week ends AND schedule ends after week starts
-      return item.startDate.isBefore(endOfWeek) && item.endDate.isAfter(startOfWeek);
+      // Overlap check: schedule starts before week ends AND schedule ends after or on today
+      return item.startDate.isBefore(endOfWeek) && (item.endDate.isAtSameMomentAs(today) || item.endDate.isAfter(today));
     }).toList();
 
     if (filteredSchedules.isEmpty) {
diff --git a/flutter_app/lib/widgets/todo_list_widget.dart b/flutter_app/lib/widgets/todo_list_widget.dart
index 22e0b8d..4cc8abc 100644
--- a/flutter_app/lib/widgets/todo_list_widget.dart
+++ b/flutter_app/lib/widgets/todo_list_widget.dart
@@ -219,12 +219,7 @@ class _TodoListWidgetState extends State<TodoListWidget> {
               decorationColor: Colors.white54,
             ),
           ),
-          subtitle: todo.dueDate != null && (todo.dueDate!.hour != 0 || todo.dueDate!.minute != 0)
-              ? Text(
-                  DateFormat('HH:mm').format(todo.dueDate!),
-                  style: const TextStyle(color: Colors.white54, fontSize: 12),
-                )
-              : null,
+          subtitle: null,
           trailing: Checkbox(
             value: todo.completed,
             onChanged: (val) async {