From ac6ae94905bfc832bf765bec365475beca398df0 Mon Sep 17 00:00:00 2001
From: Lianne van der Boom <lvdboom@impress.nl>
Date: Tue, 23 Sep 2025 15:56:03 +0200
Subject: [PATCH] Fix start date and of month calculation

---
 src/date_utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/date_utils.js b/src/date_utils.js
index f9112e9f7..494800c59 100644
--- a/src/date_utils.js
+++ b/src/date_utils.js
@@ -137,7 +137,7 @@ export default {
         let yearDiff = date_a.getFullYear() - date_b.getFullYear();
         let monthDiff = date_a.getMonth() - date_b.getMonth();
         // calculate extra
-        monthDiff += (days % 30) / 30;
+        monthDiff += date_a.getDate() / 31;
 
         /* If monthDiff is negative, date_b is in an earlier month than
         date_a and thus subtracted from the year difference in months */