diff --git a/static/chart.js b/static/chart.js
index 0d0f50c..d3d7828 100644
--- a/static/chart.js
+++ b/static/chart.js
@@ -184,8 +184,8 @@ class ConfluenceChart {
         timeFormatter: time => {
           const daily = this.bars[0]?.tf === '1d';
           return new Date(time * 1000).toLocaleString(undefined, daily
-            ? { timeZone: 'UTC', year: 'numeric', month: 'short', day: 'numeric' }
-            : { hour12: false, month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' });
+            ? { timeZone: 'UTC', weekday: 'short', year: 'numeric', month: 'short', day: 'numeric' }
+            : { weekday: 'short', hour12: false, month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' });
         },
       },
       rightPriceScale: { borderVisible: false },