From 4f6b5123a2e24fd60cf20298153ef6d90b5e58fe Mon Sep 17 00:00:00 2001
From: Carl Schwan <carl@carlschwan.eu>
Date: Tue, 8 Sep 2026 09:59:35 +0200
Subject: [PATCH] fix: Use compatibility list when checking for timezone

Intl.DateTimeFormat().resolvedOptions().timeZone might return some
legacy timezone like Europe/Kiev instead of Europe/Kyiv

Signed-off-by: Carl Schwan <carl@carlschwan.eu>
---
 lib/Controller/TimezoneController.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Controller/TimezoneController.php b/lib/Controller/TimezoneController.php
index 849e3b6ea..88adb20a8 100644
--- a/lib/Controller/TimezoneController.php
+++ b/lib/Controller/TimezoneController.php
@@ -36,7 +36,7 @@ public function __construct(
 	#[NoAdminRequired]
 	#[UseSession]
 	public function setTimezone(string $timezone, int $timezoneOffset): JSONResponse {
-		if (!in_array($timezone, \DateTimeZone::listIdentifiers())) {
+		if (!in_array($timezone, \DateTimeZone::listIdentifiers(\DateTimeZone::ALL_WITH_BC))) {
 			throw new \InvalidArgumentException('Invalid timezone');
 		}
 		if ($this->userId === null) {