diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6c0a72211..f8d7f3097f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,11 +6,12 @@
 All notable changes to this project will be documented in this file.
 ## [Unreleased]
  - Support Nextcloud 34 (Hub 26 Spring)
+ - Make modal for sending out confirmations closeable
+ - Apply time zone to confirmation mail
 
 ## [9.1.1] - 2026-05-06
 ### Fixed
  - Fix repairstep which deleted the display names from shares
- - Make modal for sending out confirmations closeable
 
 ### Changed
  - Set default sort to last activity (renamed from last interaction) for poll list, navigation and dashboard
diff --git a/lib/Model/Mail/ConfirmationMail.php b/lib/Model/Mail/ConfirmationMail.php
index 05ffe07c4d..6266aec97a 100644
--- a/lib/Model/Mail/ConfirmationMail.php
+++ b/lib/Model/Mail/ConfirmationMail.php
@@ -9,6 +9,7 @@
 
 namespace OCA\Polls\Model\Mail;
 
+use DateTimeZone;
 use OCA\Polls\AppInfo\Application;
 use OCA\Polls\Db\Option;
 use OCA\Polls\Db\Poll;
@@ -47,18 +48,21 @@ protected function buildBody(): void {
 			$this->l10n->n('Confirmed option:', 'Confirmed options:', count($this->confirmedOptions))
 		);
 
+		$useTimeZoneName = $this->poll->getTimezoneName() ?? $this->recipient->getTimeZoneName();
+		$useTimeZone = new DateTimeZone($useTimeZoneName);
+
 		$localizedDateSpan = new DateTimeIntervalText($this->l10n);
 
 		foreach ($this->confirmedOptions as $option) {
 			if ($this->poll->getType() === Poll::TYPE_DATE) {
-				$dateTime = $option->getDateTime();
+				$dateTime = $option->getDateTime()->setTimeZone($useTimeZone);
 
 				if ($dateTime->getISO() === null) {
 					continue;
 				}
 
 				$localizedDateSpan
-					->setStartDateTime($option->getDateTime())
+					->setStartDateTime($dateTime)
 					->setInterval($option->getInterval());
 
 				$this->emailTemplate->addBodyListItem(
@@ -72,7 +76,7 @@ protected function buildBody(): void {
 
 		if ($this->poll->getType() === Poll::TYPE_DATE) {
 			$this->emailTemplate->addBodyText(
-				$this->l10n->t('The used time zone is "%s", based on the detected time zone at your registration time. To view the times in your current time zone, enter the poll by clicking the button below.', $this->recipient->getTimeZoneName())
+				$this->l10n->t('The used time zone is "%s". To view the times in your current time zone, enter the poll by clicking the button below.', $useTimeZoneName)
 			);
 		}
 
diff --git a/lib/Model/UserBase.php b/lib/Model/UserBase.php
index d290d98d77..8a8c9a5404 100644
--- a/lib/Model/UserBase.php
+++ b/lib/Model/UserBase.php
@@ -24,7 +24,6 @@
 use OCA\Polls\Model\User\User;
 use OCA\Polls\UserSession;
 use OCP\Collaboration\Collaborators\ISearch;
-use OCP\IDateTimeZone;
 use OCP\IGroupManager;
 use OCP\IL10N;
 use OCP\Share\IShare;
@@ -69,7 +68,6 @@ class UserBase implements JsonSerializable {
 	protected string $description = '';
 	protected string $richObjectType = self::TYPE_USER;
 	protected string $organisation = '';
-	protected IDateTimeZone $timeZone;
 	protected IGroupManager $groupManager;
 	protected IL10N $l10n;
 	protected UserSession $userSession;
@@ -86,7 +84,6 @@ public function __construct(
 	) {
 		$this->l10n = Container::getL10N();
 		$this->groupManager = Container::queryClass(IGroupManager::class);
-		$this->timeZone = Container::queryClass(IDateTimeZone::class);
 		$this->userSession = Container::queryClass(UserSession::class);
 		$this->appSettings = Container::queryClass(AppSettings::class);
 	}
@@ -172,14 +169,14 @@ public function getLocaleCodeIntl(): string {
 	}
 
 	public function getTimeZone(): DateTimeZone {
-		if ($this->timeZoneName) {
-			return new DateTimeZone($this->timeZoneName);
-		}
-		return new DateTimeZone($this->timeZone->getTimeZone()->getName());
+		return new DateTimeZone($this->timeZoneName);
 	}
 
 	public function getTimeZoneName(): string {
-		return $this->timeZoneName;
+		if ($this->timeZoneName) {
+			return $this->timeZoneName;
+		}
+		return date_default_timezone_get();
 	}
 
 	public function getDisplayName(): string {