From bc46f4fbc452b804903de6a48aec7410932e083f Mon Sep 17 00:00:00 2001
From: Alex van Andel <me@alexvanandel.com>
Date: Wed, 29 Dec 2021 09:27:49 +0100
Subject: [PATCH] Fixes day of month start day (#1389)

---
 components/booking/DatePicker.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/booking/DatePicker.tsx b/components/booking/DatePicker.tsx
index 33284ef0..3f3691cb 100644
--- a/components/booking/DatePicker.tsx
+++ b/components/booking/DatePicker.tsx
@@ -97,7 +97,7 @@ function DatePicker({
       return [];
     }
     // Create placeholder elements for empty days in first week
-    let weekdayOfFirst = browsingDate.startOf("month").day();
+    let weekdayOfFirst = browsingDate.date(1).day();
     if (weekStart === "Monday") {
       weekdayOfFirst -= 1;
       if (weekdayOfFirst < 0) weekdayOfFirst = 6;