diff --git a/manager/check_justif.cjs b/manager/check_justif.cjs
new file mode 100644
index 0000000..ff8e965
--- /dev/null
+++ b/manager/check_justif.cjs
@@ -0,0 +1,25 @@
+const { Pool } = require('pg');
+const pool = new Pool({
+  user: 'postgres',
+  host: 'localhost',
+  database: 'edumanager',
+  password: 'admin',
+  port: 5432,
+});
+
+async function run() {
+  try {
+    const res = await pool.query("SELECT id, aluno_id, data, tipo, justificativa, justificativa_aceita FROM frequencias WHERE justificativa IS NOT NULL LIMIT 5;");
+    console.log(JSON.stringify(res.rows, null, 2));
+    
+    // Check all attendance for a student with justification
+    const res2 = await pool.query("SELECT * FROM frequencias WHERE aluno_id = (SELECT aluno_id FROM frequencias WHERE justificativa IS NOT NULL LIMIT 1) ORDER BY data DESC LIMIT 5");
+    console.log("Student Recent:", JSON.stringify(res2.rows, null, 2));
+
+  } catch(e) {
+    console.error(e);
+  } finally {
+    pool.end();
+  }
+}
+run();
diff --git a/portal/src/pages/Frequencia.tsx b/portal/src/pages/Frequencia.tsx
index b59dcc5..91e4225 100644
--- a/portal/src/pages/Frequencia.tsx
+++ b/portal/src/pages/Frequencia.tsx
@@ -611,9 +611,7 @@ export default function Frequencia() {
                         ) : canJustify ? (
                           <button
                             onClick={() => {
-                              const lMs = parseLessonDateTime(lesson.date, lesson.startTime || '00:00:00');
-                              if (isNaN(lMs)) return;
-                              const timestamp = new Date(lMs).toISOString();
+                              const timestamp = `${lesson.date}T${lesson.startTime || '00:00'}:00`;
                               openJustifyModal(timestamp);
                             }}
                             style={{
@@ -719,9 +717,7 @@ export default function Frequencia() {
                         return (isNaN(msB) ? 0 : msB) - (isNaN(msA) ? 0 : msA);
                       })
                       .map(l => {
-                        const lMs = parseLessonDateTime(l.date, l.startTime || '00:00:00');
-                        if (isNaN(lMs)) return null;
-                        const ts = new Date(lMs).toISOString();
+                        const ts = `${l.date}T${l.startTime || '00:00'}:00`;
                         return (
                           <option key={l.id} value={ts}>
                             {formatDateFull(l.date)}{l.startTime ? ` — ${l.startTime.substring(0, 5)}` : ''}{l.endTime ? ` às ${l.endTime.substring(0, 5)}` : ''}