diff --git a/src/Repository/TimesheetRepository.php b/src/Repository/TimesheetRepository.php
index 495c4cbc..fce4d95e 100644
--- a/src/Repository/TimesheetRepository.php
+++ b/src/Repository/TimesheetRepository.php
@@ -275,37 +275,86 @@ class TimesheetRepository extends EntityRepository
      * @param User|null $user
      * @return mixed
      */
-    public function getDailyData(DateTime $begin, DateTime $end, ?User $user = null)
+    protected function getDailyData(DateTime $begin, DateTime $end, ?User $user = null)
     {
-        $qb = $this->getEntityManager()->createQueryBuilder();
+        $query = new TimesheetQuery();
+        $query
+            ->setBegin($begin)
+            ->setEnd($end)
+            ->setUser($user)
+            ->setState(TimesheetQuery::STATE_STOPPED)
+        ;
+        $timesheets = $this->getTimesheetsForQuery($query);
 
-        $qb
-            ->addSelect('SUM(t.rate) as rate')
-            ->addSelect('SUM(t.duration) as duration')
-            ->addSelect('MONTH(t.begin) as month')
-            ->addSelect('YEAR(t.begin) as year')
-            ->addSelect('DAY(t.begin) as day')
-            ->from(Timesheet::class, 't')
-            ->andWhere($qb->expr()->gte('t.begin', ':from'))
-            ->setParameter('from', $begin, Type::DATETIME)
-            ->andWhere($qb->expr()->lte('t.end', ':to'))
-            ->setParameter('to', $end, Type::DATETIME);
+        $results = [];
+        /** @var Timesheet $result */
+        foreach ($timesheets as $result) {
+            $timezone = new \DateTimeZone($result->getTimezone());
+            /** @var \DateTime $beginTmp */
+            $beginTmp = $result->getBegin();
+            $beginTmp->setTimezone($timezone);
+            /** @var DateTime $endTmp */
+            $endTmp = $result->getEnd();
+            $endTmp->setTimezone($timezone);
+            $dateKeyEnd = $endTmp->format('Ymd');
 
-        if (null !== $user) {
-            $qb->andWhere('t.user = :user')
-                ->setParameter('user', $user);
+            do {
+                $dateKey = $beginTmp->format('Ymd');
+
+                if (!isset($results[$dateKey])) {
+                    $results[$dateKey] = [
+                        'rate' => 0,
+                        'duration' => 0,
+                        'month' => $beginTmp->format('n'),
+                        'year' => $beginTmp->format('Y'),
+                        'day' => $beginTmp->format('j'),
+                        'details' => []
+                    ];
+                }
+
+                if ($dateKey !== $dateKeyEnd) {
+                    $newDateBegin = clone $beginTmp;
+                    $newDateBegin->add(new \DateInterval('P1D'));
+                    $newDateBegin->setTime(0, 0, 0);
+                } else {
+                    $newDateBegin = clone $endTmp;
+                }
+
+                $duration = $newDateBegin->getTimestamp() - $beginTmp->getTimestamp();
+                $durationPercent = $duration / $result->getDuration();
+                $rate = $result->getRate() * $durationPercent;
+
+                $results[$dateKey]['rate'] += $rate;
+                $results[$dateKey]['duration'] += $duration;
+                $detailsId = $result->getProject()->getCustomer()->getId() . '_' . $result->getProject()->getId();
+                if (!isset($results[$dateKey]['details'][$detailsId])) {
+                    $results[$dateKey]['details'][$detailsId] = [
+                        'project' => $result->getProject(),
+                        'activity' => $result->getActivity(),
+                        'duration' => 0,
+                        'rate' => 0,
+                    ];
+
+                    $results[$dateKey]['details'][$detailsId]['duration'] += $duration;
+                    $results[$dateKey]['details'][$detailsId]['rate'] += $rate;
+                }
+
+                $beginTmp = $newDateBegin;
+
+                if ((int) $end->format('Ymd') < (int) $newDateBegin->format('Ymd')) {
+                    break 1;
+                }
+            } while ($dateKey !== $dateKeyEnd);
         }
 
-        $qb
-            ->addGroupBy('year')
-            ->addGroupBy('month')
-            ->addGroupBy('day')
-            ->addOrderBy('year', 'DESC')
-            ->addOrderBy('month', 'ASC')
-            ->addOrderBy('day', 'ASC')
-        ;
+        ksort($results);
 
-        return $qb->getQuery()->execute();
+        foreach ($results as $key => $value) {
+            $results[$key]['details'] = array_values($results[$key]['details']);
+        }
+        $results = array_values($results);
+
+        return $results;
     }
 
     /**
@@ -334,7 +383,9 @@ class TimesheetRepository extends EntityRepository
         foreach ($results as $statRow) {
             $dateTime = new DateTime();
             $dateTime->setDate($statRow['year'], $statRow['month'], $statRow['day']);
-            $days[$dateTime->format('Ymd')] = new Day($dateTime, (int) $statRow['duration'], (float) $statRow['rate']);
+            $dateTime->setTime(0, 0, 0);
+            $day = new Day($dateTime, (int) $statRow['duration'], (float) $statRow['rate']);
+            $days[$dateTime->format('Ymd')] = $day;
         }
 
         ksort($days);
diff --git a/src/Widget/Type/DailyWorkingTimeChart.php b/src/Widget/Type/DailyWorkingTimeChart.php
index ff79295f..169902e0 100644
--- a/src/Widget/Type/DailyWorkingTimeChart.php
+++ b/src/Widget/Type/DailyWorkingTimeChart.php
@@ -11,6 +11,7 @@ namespace App\Widget\Type;
 
 use App\Repository\TimesheetRepository;
 use App\Security\CurrentUser;
+use App\Timesheet\UserDateTimeFactory;
 use DateTime;
 
 class DailyWorkingTimeChart extends SimpleWidget
@@ -21,10 +22,15 @@ class DailyWorkingTimeChart extends SimpleWidget
      * @var TimesheetRepository
      */
     protected $repository;
+    /**
+     * @var UserDateTimeFactory
+     */
+    private $dateTimeFactory;
 
-    public function __construct(TimesheetRepository $repository, CurrentUser $user)
+    public function __construct(TimesheetRepository $repository, CurrentUser $user, UserDateTimeFactory $dateTime)
     {
         $this->repository = $repository;
+        $this->dateTimeFactory = $dateTime;
         $this->setId('DailyWorkingTimeChart');
         $this->setTitle('stats.yourWorkingHours');
         $this->setOptions([
@@ -57,8 +63,8 @@ class DailyWorkingTimeChart extends SimpleWidget
         $options = $this->getOptions($options);
 
         $user = $options['user'];
-        $begin = new DateTime($options['begin']);
-        $end = new DateTime($options['end']);
+        $begin = new DateTime($options['begin'], $this->dateTimeFactory->getTimezone());
+        $end = new DateTime($options['end'], $this->dateTimeFactory->getTimezone());
 
         return $this->repository->getDailyStats($user, $begin, $end);
     }
diff --git a/templates/widget/widget-dailyworkingtimechart.html.twig b/templates/widget/widget-dailyworkingtimechart.html.twig
index bc306aed..df6326a0 100644
--- a/templates/widget/widget-dailyworkingtimechart.html.twig
+++ b/templates/widget/widget-dailyworkingtimechart.html.twig
@@ -35,7 +35,7 @@ document.addEventListener('kimai.initialized', function() {
             data: {
                 labels: [
                     {% for day in data -%}
-                    moment('{{ day.day|date_format(constant('\DateTime::ISO8601')) }}').format('ll')
+                    moment('{{ day.day|date_format('Y-m-d') }}').format('ll')
                     {% if not loop.last %},{% endif -%}
                     {%- endfor %}
                 ],
diff --git a/tests/Widget/Type/DailyWorkingTimeChartTest.php b/tests/Widget/Type/DailyWorkingTimeChartTest.php
index 67e8619f..b39d97e0 100644
--- a/tests/Widget/Type/DailyWorkingTimeChartTest.php
+++ b/tests/Widget/Type/DailyWorkingTimeChartTest.php
@@ -13,6 +13,7 @@ use App\Entity\User;
 use App\Model\Statistic\Day;
 use App\Repository\TimesheetRepository;
 use App\Security\CurrentUser;
+use App\Tests\Mocks\Security\UserDateTimeFactoryFactory;
 use App\Widget\Type\AbstractWidgetType;
 use App\Widget\Type\DailyWorkingTimeChart;
 use App\Widget\Type\SimpleWidget;
@@ -31,8 +32,9 @@ class DailyWorkingTimeChartTest extends TestCase
         $repository = $this->getMockBuilder(TimesheetRepository::class)->disableOriginalConstructor()->getMock();
         $user = $this->getMockBuilder(CurrentUser::class)->disableOriginalConstructor()->setMethods(['getUser'])->getMock();
         $user->expects($this->once())->method('getUser')->willReturn(new User());
+        $mockFactory = new UserDateTimeFactoryFactory($this);
 
-        return new DailyWorkingTimeChart($repository, $user);
+        return new DailyWorkingTimeChart($repository, $user, $mockFactory->create('Europe/Berlin'));
     }
 
     public function testExtendsSimpleWidget()
@@ -106,8 +108,9 @@ class DailyWorkingTimeChartTest extends TestCase
         });
         $user = $this->getMockBuilder(CurrentUser::class)->disableOriginalConstructor()->setMethods(['getUser'])->getMock();
         $user->expects($this->once())->method('getUser')->willReturn((new User())->setUsername('tralalala'));
+        $mockFactory = new UserDateTimeFactoryFactory($this);
 
-        $sut = new DailyWorkingTimeChart($repository, $user);
+        $sut = new DailyWorkingTimeChart($repository, $user, $mockFactory->create('Europe/Berlin'));
         $data = $sut->getData([]);
         self::assertCount(7, $data);
         foreach ($data as $statObj) {