diff --git a/app/Http/Controllers/Api/AttendanceSyncController.php b/app/Http/Controllers/Api/AttendanceSyncController.php
index e00a388..551d860 100644
--- a/app/Http/Controllers/Api/AttendanceSyncController.php
+++ b/app/Http/Controllers/Api/AttendanceSyncController.php
@@ -90,8 +90,7 @@ class AttendanceSyncController extends Controller
         $classNameMap = $students->pluck('class_name', 'id');
 
         $alphaCounts = [];
-        $alphaDate = null;
-        $allStudentIdsInPush = []; // track all students for cleanup
+        $datesByStudent = []; // student_id => [date => true] — untuk pembersihan violation per tanggal
 
         foreach ($attendances as $item) {
             $sourceId = $item['source_student_id'];
@@ -103,7 +102,7 @@ class AttendanceSyncController extends Controller
             }
 
             $localStudentId = $studentMap[$sourceId];
-            $allStudentIdsInPush[$localStudentId] = true;
+            $datesByStudent[$localStudentId][$item['date']] = true;
 
             $statusMap = [
                 'present' => 'hadir',
@@ -137,7 +136,6 @@ class AttendanceSyncController extends Controller
 
                 if ($localStatus === 'alpha') {
                     $alphaCounts[$localStudentId] = ($alphaCounts[$localStudentId] ?? 0) + 1;
-                    $alphaDate = $item['date'];
                 }
             } catch (\Exception $e) {
                 $results['errors'][] = "student_id={$sourceId} jam={$item['lesson_hour']}: " . $e->getMessage();
@@ -145,57 +143,63 @@ class AttendanceSyncController extends Controller
             }
         }
 
-        // Auto-generate / update / hapus violations untuk alpha siswa di push ini
+        // Auto-generate / update / hapus violations alpha per (siswa, tanggal) dari push ini.
+        // FIX 2026-08-31: sebelumnya memakai $alphaDate global (null saat push tanpa alpha)
+        // sehingga violation lama tidak pernah dihapus → false positive; dan $totalAlpha
+        // dihitung untuk semua siswa memakai satu tanggal global → rawan salah tanggal/siswa.
+        // Sekarang iterasi per (student, date) yang benar-benar muncul di push.
         $alphaType = ViolationType::where('slug', 'alpha')->first();
 
         if ($alphaType) {
             $violationService = app(\App\Services\ViolationService::class);
 
-            foreach ($allStudentIdsInPush as $studentId => $_) {
-                try {
-                    // Hitung total alpha di DB (akumulasi dari semua push, bukan cuma push ini)
-                    $totalAlpha = \App\Models\Attendance::where('student_id', $studentId)
-                        ->where('date', $alphaDate)
-                        ->where('status', 'alpha')
-                        ->count();
+            foreach ($datesByStudent as $studentId => $dates) {
+                foreach (array_keys($dates) as $date) {
+                    try {
+                        // Hitung total alpha di DB per (siswa, tanggal) — akumulasi dari semua push
+                        $totalAlpha = \App\Models\Attendance::where('student_id', $studentId)
+                            ->where('date', $date)
+                            ->where('status', 'alpha')
+                            ->count();
 
-                    // Cari existing system-generated violation
-                    $existing = \App\Models\Violation::where('student_id', $studentId)
-                        ->where('violation_type_id', $alphaType->id)
-                        ->where('violation_date', $alphaDate)
-                        ->whereNull('recorded_by')
-                        ->first();
+                        // Cari existing system-generated violation untuk (siswa, tanggal) yang sama
+                        $existing = \App\Models\Violation::where('student_id', $studentId)
+                            ->where('violation_type_id', $alphaType->id)
+                            ->where('violation_date', $date)
+                            ->whereNull('recorded_by')
+                            ->first();
 
-                    if ($totalAlpha > 0) {
-                        // Ada alpha → buat/update violation
-                        $points = max(1, (int) round(($alphaType->points / 10) * $totalAlpha));
-                        $desc = "Alpha - Tidak hadir tanpa keterangan ({$totalAlpha} jam pelajaran)";
+                        if ($totalAlpha > 0) {
+                            // Ada alpha → buat/update violation
+                            $points = max(1, (int) round(($alphaType->points / 10) * $totalAlpha));
+                            $desc = "Alpha - Tidak hadir tanpa keterangan ({$totalAlpha} jam pelajaran)";
 
-                        if ($existing) {
-                            $existing->update([
-                                'points' => $points,
-                                'description' => $desc,
-                                'notes' => 'Diperbarui otomatis dari sinkron E-Jurnal.',
-                            ]);
-                        } else {
-                            $violationService->recordViolation([
-                                'student_id' => $studentId,
-                                'violation_type_id' => $alphaType->id,
-                                'violation_date' => $alphaDate,
-                                'points' => $points,
-                                'description' => $desc,
-                                'notes' => 'Dibuat otomatis dari sinkron E-Jurnal.',
-                                'evidences' => [],
-                            ], null);
+                            if ($existing) {
+                                $existing->update([
+                                    'points' => $points,
+                                    'description' => $desc,
+                                    'notes' => 'Diperbarui otomatis dari sinkron E-Jurnal.',
+                                ]);
+                            } else {
+                                $violationService->recordViolation([
+                                    'student_id' => $studentId,
+                                    'violation_type_id' => $alphaType->id,
+                                    'violation_date' => $date,
+                                    'points' => $points,
+                                    'description' => $desc,
+                                    'notes' => 'Dibuat otomatis dari sinkron E-Jurnal.',
+                                    'evidences' => [],
+                                ], null);
+                            }
+                            $results['violations']++;
+                        } elseif ($existing) {
+                            // Tidak ada alpha di tanggal ini tapi ada violation system lama → hapus (ganti status ke hadir)
+                            $existing->delete();
+                            $results['violations']++;
                         }
-                        $results['violations']++;
-                    } elseif ($existing) {
-                        // Tidak ada alpha tapi ada violation lama → hapus (ganti status ke hadir)
-                        $existing->delete();
-                        $results['violations']++;
+                    } catch (\Exception $e) {
+                        $results['errors'][] = "Violation sync failed for student={$studentId} date={$date}: " . $e->getMessage();
                     }
-                } catch (\Exception $e) {
-                    $results['errors'][] = "Violation sync failed for student={$studentId}: " . $e->getMessage();
                 }
             }
         } else {
diff --git a/tests/Feature/AttendanceSyncViolationFixTest.php b/tests/Feature/AttendanceSyncViolationFixTest.php
new file mode 100644
index 0000000..a85ffb7
--- /dev/null
+++ b/tests/Feature/AttendanceSyncViolationFixTest.php
@@ -0,0 +1,171 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Attendance;
+use App\Models\Setting;
+use App\Models\Student;
+use App\Models\Violation;
+use App\Models\ViolationType;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+/**
+ * FIX 2026-08-31 — bug sync attendance e-jurnal → violation alpha:
+ * 1. violation lama tidak pernah dihapus saat push koreksi tanpa alpha ($alphaDate null)
+ * 2. totalAlpha dihitung untuk semua siswa memakai tanggal global → salah siswa/tanggal
+ *
+ * Kasus nyata: XII TKJ 3 26-08 HENDIK (sakit) / RAMADANI & RHEDO (hadir) dicatat bolos.
+ */
+class AttendanceSyncViolationFixTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        Setting::setValue('ejurnal_sync_token', 'test-token');
+
+        $category = \App\Models\ViolationCategory::create([
+            'name' => 'Kehadiran',
+            'slug' => 'kehadiran',
+            'color' => '#EF4444',
+            'is_active' => true,
+        ]);
+
+        ViolationType::create([
+            'category_id' => $category->id,
+            'name' => 'Membolos/tidak masuk sekolah tanpa keterangan',
+            'slug' => 'alpha',
+            'points' => 20, // poin per 10 JP (2 poin/JP)
+            'description' => 'Tidak hadir tanpa keterangan',
+            'is_active' => true,
+            'is_system' => true,
+        ]);
+    }
+
+    protected function makeStudent(int $sourceId, string $name): Student
+    {
+        return Student::create([
+            'source_id' => (string) $sourceId,
+            'nisn' => '00' . $sourceId,
+            'student_number' => 'TEST/' . $sourceId,
+            'full_name' => $name,
+            'class_name' => 'XII TKJ 3',
+            'class_level' => 'XII',
+            'department_name' => 'TKJ',
+            'status' => 'active',
+            'is_active' => true,
+        ]);
+    }
+
+    protected function sync(array $attendances): \Illuminate\Testing\TestResponse
+    {
+        return $this->post('/api/v1/attendance/sync', [
+            'token' => 'test-token',
+            'attendances' => $attendances,
+        ]);
+    }
+
+    public function test_push_alpha_membuat_violation_hanya_untuk_siswa_alpha(): void
+    {
+        $s1 = $this->makeStudent(1001, 'SISWA ALPHA');
+        $s2 = $this->makeStudent(1002, 'SISWA HADIR');
+
+        $this->sync([
+            ['source_student_id' => 1001, 'date' => '2026-08-26', 'lesson_hour' => 1, 'status' => 'alpha'],
+            ['source_student_id' => 1001, 'date' => '2026-08-26', 'lesson_hour' => 2, 'status' => 'alpha'],
+            ['source_student_id' => 1002, 'date' => '2026-08-26', 'lesson_hour' => 1, 'status' => 'hadir'],
+        ])->assertOk();
+
+        // Siswa alpha → violation 2 JP = 4 poin (2 poin/JP)
+        $this->assertDatabaseHas('violations', [
+            'student_id' => $s1->id,
+            'violation_date' => '2026-08-26',
+            'points' => 4,
+        ]);
+
+        // Siswa hadir → TIDAK boleh kena violation
+        $this->assertDatabaseMissing('violations', [
+            'student_id' => $s2->id,
+            'violation_date' => '2026-08-26',
+        ]);
+    }
+
+    public function test_push_koreksi_tanpa_alpha_menghapus_violation_lama(): void
+    {
+        $s1 = $this->makeStudent(1001, 'SISWA KOREKSI');
+        $alphaType = ViolationType::where('slug', 'alpha')->first();
+
+        // Simulasikan violation system-generated lama (salah: siswa sebenarnya sakit)
+        Violation::create([
+            'student_id' => $s1->id,
+            'student_class' => 'XII TKJ 3',
+            'violation_type_id' => $alphaType->id,
+            'recorded_by' => null,
+            'description' => 'Alpha - Tidak hadir tanpa keterangan (4 jam pelajaran)',
+            'points' => 8,
+            'violation_date' => '2026-08-26',
+            'notes' => 'Dibuat otomatis dari sinkron E-Jurnal.',
+        ]);
+
+        // Push koreksi: siswa kini SAKIT (tidak ada alpha sama sekali dalam push)
+        $this->sync([
+            ['source_student_id' => 1001, 'date' => '2026-08-26', 'lesson_hour' => 1, 'status' => 'sakit'],
+            ['source_student_id' => 1001, 'date' => '2026-08-26', 'lesson_hour' => 2, 'status' => 'sakit'],
+        ])->assertOk();
+
+        // Violation lama harus TERHAPUS (bug lama: tidak terhapus karena $alphaDate null)
+        $this->assertNull(
+            Violation::where('student_id', $s1->id)->where('violation_date', '2026-08-26')->first(),
+            'Violation alpha lama harus terhapus setelah push koreksi tanpa alpha.'
+        );
+    }
+
+    public function test_push_multi_tanggal_tidak_membuat_violation_salah_tanggal(): void
+    {
+        $s1 = $this->makeStudent(1001, 'SISWA CAMPURAN');
+
+        // Push berisi 2 tanggal: 26-08 hadir, 27-08 alpha.
+        // Bug lama: $alphaDate global = 27-08 → siswa dihitung alpha di 27-08 untuk semua siswa.
+        // Harusnya violation HANYA untuk 27-08.
+        $this->sync([
+            ['source_student_id' => 1001, 'date' => '2026-08-26', 'lesson_hour' => 1, 'status' => 'hadir'],
+            ['source_student_id' => 1001, 'date' => '2026-08-27', 'lesson_hour' => 1, 'status' => 'alpha'],
+            ['source_student_id' => 1001, 'date' => '2026-08-27', 'lesson_hour' => 2, 'status' => 'alpha'],
+        ])->assertOk();
+
+        $this->assertDatabaseHas('violations', [
+            'student_id' => $s1->id,
+            'violation_date' => '2026-08-27',
+            'points' => 4,
+        ]);
+        $this->assertDatabaseMissing('violations', [
+            'student_id' => $s1->id,
+            'violation_date' => '2026-08-26',
+        ]);
+    }
+
+    public function test_push_siswa_yang_bukan_alpha_tidak_kena_violation_saat_push_berisi_alpha_siswa_lain(): void
+    {
+        $s1 = $this->makeStudent(1001, 'SISWA ALPHA');
+        $s2 = $this->makeStudent(1002, 'SISWA HADIR');
+
+        // Bug lama: totalAlpha dihitung utk SEMUA siswa dgn tanggal global → s2 ikut kena.
+        $this->sync([
+            ['source_student_id' => 1001, 'date' => '2026-08-26', 'lesson_hour' => 1, 'status' => 'alpha'],
+            ['source_student_id' => 1002, 'date' => '2026-08-26', 'lesson_hour' => 1, 'status' => 'hadir'],
+            ['source_student_id' => 1002, 'date' => '2026-08-26', 'lesson_hour' => 2, 'status' => 'hadir'],
+        ])->assertOk();
+
+        $this->assertDatabaseHas('violations', [
+            'student_id' => $s1->id,
+            'violation_date' => '2026-08-26',
+        ]);
+        $this->assertDatabaseMissing('violations', [
+            'student_id' => $s2->id,
+            'violation_date' => '2026-08-26',
+        ]);
+    }
+}