diff --git a/public/dashboard/js/dashboard.js b/public/dashboard/js/dashboard.js
index 6d72081..f617b10 100644
--- a/public/dashboard/js/dashboard.js
+++ b/public/dashboard/js/dashboard.js
@@ -64,9 +64,14 @@ async function getLastAvailableDate() {
     
     // Jika tidak, coba kemarin (gunakan timezone Indonesia UTC+7)
     const now = new Date();
-    const indonesiaTime = new Date(now.getTime() + (7 * 60 * 60 * 1000)); // UTC+7
-    const yesterday = new Date(indonesiaTime.getTime() - (24 * 60 * 60 * 1000));
-    const yesterdayStr = yesterday.toISOString().split('T')[0];
+    const yesterdayDate = new Date(now.getTime() - (24 * 60 * 60 * 1000));
+    const formatter = new Intl.DateTimeFormat('en-CA', {
+      timeZone: 'Asia/Jakarta',
+      year: 'numeric',
+      month: '2-digit',
+      day: '2-digit'
+    });
+    const yesterdayStr = formatter.format(yesterdayDate);
     const yesterdayData = await apiGetSummary({ date: yesterdayStr });
     
     console.log('[Dashboard] getLastAvailableDate - yesterday data:', yesterdayData);