From 481a87367c3c33420aaa3d51334717c6ae47c477 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Tue, 24 Aug 2021 12:17:35 +1000
Subject: [PATCH] fix incorrect calendar day labels

https://forums.ankiweb.net/t/day-of-the-week-legend-on-heatmap/9450/7
---
 ts/lib/i18n_helpers.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ts/lib/i18n_helpers.ts b/ts/lib/i18n_helpers.ts
index 9049c906b..6dbf7c53e 100644
--- a/ts/lib/i18n_helpers.ts
+++ b/ts/lib/i18n_helpers.ts
@@ -61,7 +61,10 @@ export class I18n {
 
     weekdayLabel(n: number): string {
         const firstLang = this.bundles[0].locales[0];
-        return new Date(86_400_000 * (3 + n)).toLocaleDateString(firstLang, {
+        const now = new Date();
+        const daysFromToday = -now.getDay() + n;
+        const desiredDay = new Date(now.getTime() + daysFromToday * 86_400_000);
+        return desiredDay.toLocaleDateString(firstLang, {
             weekday: "narrow",
         });
     }