From 6a6a6cc22ae1384b48c1e9d7ff4e0cee0f6c92a1 Mon Sep 17 00:00:00 2001
From: pdady <21250621+pdady@users.noreply.github.com>
Date: Wed, 1 Feb 2023 23:44:48 +0100
Subject: [PATCH] fix: rounding behavior in Luxon localizer

Round down the date difference returned in the `diff` function of the
luxon localizer to the nearest whole number, aligning the behavior with
other localizers.

Closes #2361
---
 src/localizers/luxon.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/localizers/luxon.js b/src/localizers/luxon.js
index 03488d5ee..726f62554 100644
--- a/src/localizers/luxon.js
+++ b/src/localizers/luxon.js
@@ -239,7 +239,7 @@ export default function (DateTime, { firstDayOfWeek = 7 } = {}) {
     // don't use 'defineComparators' here, as we don't want to mutate the values
     const dtA = DateTime.fromJSDate(a)
     const dtB = DateTime.fromJSDate(b)
-    return Math.round(
+    return Math.floor(
       dtB.diff(dtA, datePart, { conversionAccuracy: 'longterm' }).toObject()[
         datePart
       ]