From 7d017b0adba216f51fd148f9076ef636845a2503 Mon Sep 17 00:00:00 2001
From: Andrew Patton <andrew@acusti.ca>
Date: Mon, 29 Apr 2024 08:26:14 -0700
Subject: [PATCH] =?UTF-8?q?Fix=20pre-1970=20logic=20to=20translate=20month?=
 =?UTF-8?q?=20=E2=86=92=20month=20in12?=
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---
 packages/date-picker/src/utils.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/date-picker/src/utils.ts b/packages/date-picker/src/utils.ts
index 4383eb84..7bda76d5 100644
--- a/packages/date-picker/src/utils.ts
+++ b/packages/date-picker/src/utils.ts
@@ -38,7 +38,8 @@ export const getMonthAbbreviationFromMonth = (month: number) => {
 
 export const getLastDateFromMonth = (month: number) => {
     const nextMonth = month + 1;
-    const lastDate = new Date(getYearFromMonth(nextMonth), Math.abs(nextMonth % 12), 1);
+    const nextMonthIn12 = nextMonth < 0 ? (12 - Math.abs(nextMonth % 12)) % 12 : nextMonth % 12;
+    const lastDate = new Date(getYearFromMonth(nextMonth), nextMonthIn12, 1);
     lastDate.setDate(lastDate.getDate() - 1);
     return lastDate;
 };