diff --git a/web/holidaySummary.php b/web/holidaySummary.php
index 517c5bf83..752db8d7a 100644
--- a/web/holidaySummary.php
+++ b/web/holidaySummary.php
@@ -66,7 +66,7 @@
                 <th>Scheduled (hours)</th>
                 <th>Pending (hours)</th>
                 <th>% planned</th>
-                <th v-for="week in weeks" :key="week">{{week}}</th>
+                <th v-for="week in weeks" :key="week">{{ weeksStartDays.find(x => x.week == week)?.weekStartDate }}<br> {{week}}</th>
             </thead>
             <tbody>
                 <tr v-for="row in displayData" :key="row.user">
@@ -94,3 +94,4 @@
 <?php
 include("include/footer.php");
 ?>
+
diff --git a/web/js/holidaySummary.js b/web/js/holidaySummary.js
index 0727a9bc4..3b63303bf 100644
--- a/web/js/holidaySummary.js
+++ b/web/js/holidaySummary.js
@@ -18,153 +18,160 @@
  */
 
 const xmlHeaders = {
-    method: 'GET',
-    mode: 'same-origin',
-    cache: 'no-cache',
-    credentials: 'same-origin',
-    headers: {
-        'Content-Type': 'text/xml'
-    },
-    referrerPolicy: 'no-referrer',
-}
+  method: 'GET',
+  mode: 'same-origin',
+  cache: 'no-cache',
+  credentials: 'same-origin',
+  headers: {
+    'Content-Type': 'text/xml'
+  },
+  referrerPolicy: 'no-referrer'
+};
 
 var app = new Vue({
-    el: '#holidaySummaryReport',
-    data() {
-        return {
-            weeks: {},
-            displayData: {},
-            isLoading: true,
-            isLoadingProjects: true,
-            projectUsers: {},
-            projectsList: [],
-            allProjects: [],
-            autocompleteIsActive: false,
-            searchProject: "",
-            activeProject: 0,
-            year: new Date().getFullYear()
-        };
-    },
-    created() {
-        this.fetchSummary();
+  el: '#holidaySummaryReport',
+  data() {
+    return {
+      weeks: {},
+      weeksStartDays: {},
+      displayData: {},
+      isLoading: true,
+      isLoadingProjects: true,
+      projectUsers: {},
+      projectsList: [],
+      allProjects: [],
+      autocompleteIsActive: false,
+      searchProject: '',
+      activeProject: 0,
+      year: new Date().getFullYear()
+    };
+  },
+  created() {
+    this.fetchSummary();
+  },
+  computed: {
+    downloadUrl() {
+      let url = `services/getHolidaySummary.php?format=csv&users=${Object.keys(this.displayData).join(',')}`;
+      return this.year ? `${url}&year=${this.year}` : url;
+    }
+  },
+  methods: {
+    async fetchProjects() {
+      let url = 'services/getProjectsService.php?active=true&users=true';
+      const res = await fetch(url, xmlHeaders);
+      const body = await res.text();
+      parser = new DOMParser();
+      xmlDoc = parser.parseFromString(body, 'text/xml');
+      const projects = xmlDoc.getElementsByTagName('project');
+      let parsedProjects = [];
+      for (var i = 0; i < projects.length; i++) {
+        parsedProjects.push({
+          id: projects[i].getElementsByTagName('id')[0].innerHTML,
+          name: projects[i].getElementsByTagName('fullDescription')[0].innerHTML
+        });
+        const users = projects[i].getElementsByTagName('user');
+        let projectUsers = [];
+        for (var j = 0; j < users.length; j++) {
+          projectUsers.push(users[j].getElementsByTagName('login')[0].innerHTML);
+        }
+        this.projectUsers[parsedProjects[i].id] = projectUsers;
+        projectUsers.sort();
+      }
+      this.isLoadingProjects = false;
+      this.projectsList = parsedProjects;
+      this.allProjects = parsedProjects;
     },
-    computed: {
-        downloadUrl() {
-            let url = `services/getHolidaySummary.php?format=csv&users=${Object.keys(this.displayData).join(",")}`;
-            return this.year ? `${url}&year=${this.year}` : url;
+    async fetchSummary() {
+      let params = new URLSearchParams(window.location.search);
+      let year = params.get('year');
+      let url = 'services/getHolidaySummary.php';
+      if (year) {
+        url += `?year=${year}`;
+        this.year = year;
+      }
+      const res = await fetch(url, {
+        method: 'GET',
+        mode: 'same-origin',
+        cache: 'no-cache',
+        credentials: 'same-origin',
+        headers: {
+          'Content-Type': 'application/json'
         },
+        referrerPolicy: 'no-referrer'
+      });
+      const body = await res.json();
+      this.isLoading = false;
+      this.weeks = Object.keys(body.weeks);
+      this.weeksStartDays = body.weeksStartDays;
+      this.displayData = body.holidays;
+      this.rawData = body.holidays;
+      await this.fetchProjects();
     },
-    methods: {
-        async fetchProjects() {
-            let url = 'services/getProjectsService.php?active=true&users=true';
-            const res = await fetch(url, xmlHeaders);
-            const body = await res.text();
-            parser = new DOMParser();
-            xmlDoc = parser.parseFromString(body, "text/xml");
-            const projects = xmlDoc.getElementsByTagName("project");
-            let parsedProjects = [];
-            for (var i = 0; i < projects.length; i++) {
-                parsedProjects.push({
-                    id: projects[i].getElementsByTagName("id")[0].innerHTML,
-                    name: projects[i].getElementsByTagName("fullDescription")[0].innerHTML,
-                });
-                const users = projects[i].getElementsByTagName("user");
-                let projectUsers = [];
-                for (var j = 0; j < users.length; j++) {
-                    projectUsers.push(users[j].getElementsByTagName("login")[0].innerHTML);
-                }
-                this.projectUsers[parsedProjects[i].id] = projectUsers;
-                projectUsers.sort()
-            }
-            this.isLoadingProjects = false;
-            this.projectsList = parsedProjects;
-            this.allProjects = parsedProjects;
-        },
-        async fetchSummary() {
-            let params = new URLSearchParams(window.location.search);
-            let year = params.get('year');
-            let url = 'services/getHolidaySummary.php';
-            if (year) {
-                url += `?year=${year}`;
-                this.year = year;
-            }
-            const res = await fetch(url, {
-                method: 'GET',
-                mode: 'same-origin',
-                cache: 'no-cache',
-                credentials: 'same-origin',
-                headers: {
-                    'Content-Type': 'application/json'
-                },
-                referrerPolicy: 'no-referrer',
-            });
-            const body = await res.json();
-            this.isLoading = false;
-            this.weeks = Object.keys(body.weeks);
-            this.displayData = body.holidays;
-            this.rawData = body.holidays;
-            await this.fetchProjects();
-        },
-        // TODO: we should implement the autocomplete as a
-        // reusable Single File Component, but before that we need to improve our
-        // static files bundling.
-        onSelectProject(projectIndex) {
-            if (!this.projectsList[projectIndex]) return;
-            const project = this.projectsList[projectIndex];
-            this.searchProject = project.name;
-            this.autocompleteIsActive = false;
-            this.projectsList = this.allProjects;
-            this.displayData = {};
-            // Diplays only users from the project
-            let users = this.projectUsers[project.id];
-            users.sort()
-            for (let i = 0; i < users.length; i++) {
-                if (this.rawData[users[i]]) {
-                    this.displayData[users[i]] = this.rawData[users[i]];
-                }
-            }
-        },
-        showOptions() {
-            this.autocompleteIsActive = true;
-        },
-        hideOptions(event) {
-            if (!event.relatedTarget?.classList.contains('autocompleteItemBtn')) {
-                this.autocompleteIsActive = false;
-            }
-            this.activeProject = 0;
-        },
-        prevProject() {
-            if (this.activeProject > 0) {
-                this.activeProject--;
-            } else {
-                this.activeProject = this.projectsList.length - 1;
-            }
-            this.scrollAutocomplete();
-        },
-        nextProject() {
-            if (this.activeProject < this.projectsList.length - 1) {
-                this.activeProject++;
-            } else {
-                this.activeProject = 0;
-            }
-            this.scrollAutocomplete();
-        },
-        scrollAutocomplete() {
-            if (!document.getElementsByClassName('autocompleteItemBtn')[this.activeProject]) return;
-            const elementHeight = document.getElementsByClassName('autocompleteItemBtn')[this.activeProject].offsetHeight;
-            const offSet = document.getElementsByClassName('autocompleteItemBtn')[this.activeProject].offsetTop + elementHeight;
-            const clientHeight = document.getElementById('projectsDropdown').clientHeight;
-            document.getElementById('projectsDropdown').scrollTop = offSet - clientHeight;
-        },
-        filterProject(event) {
-            this.autocompleteIsActive = true;
-            if (!event.target.value) {
-                // reset list of users when no project is selected
-                this.displayData = this.rawData;
-                this.projectsList = this.allProjects;
-            } else {
-                this.projectsList = this.allProjects.filter(project => project.name.toLowerCase().includes(event.target.value.toLowerCase()));
-            }
-        },
+    // TODO: we should implement the autocomplete as a
+    // reusable Single File Component, but before that we need to improve our
+    // static files bundling.
+    onSelectProject(projectIndex) {
+      if (!this.projectsList[projectIndex]) return;
+      const project = this.projectsList[projectIndex];
+      this.searchProject = project.name;
+      this.autocompleteIsActive = false;
+      this.projectsList = this.allProjects;
+      this.displayData = {};
+      // Diplays only users from the project
+      let users = this.projectUsers[project.id];
+      users.sort();
+      for (let i = 0; i < users.length; i++) {
+        if (this.rawData[users[i]]) {
+          this.displayData[users[i]] = this.rawData[users[i]];
+        }
+      }
+    },
+    showOptions() {
+      this.autocompleteIsActive = true;
+    },
+    hideOptions(event) {
+      if (!event.relatedTarget?.classList.contains('autocompleteItemBtn')) {
+        this.autocompleteIsActive = false;
+      }
+      this.activeProject = 0;
+    },
+    prevProject() {
+      if (this.activeProject > 0) {
+        this.activeProject--;
+      } else {
+        this.activeProject = this.projectsList.length - 1;
+      }
+      this.scrollAutocomplete();
+    },
+    nextProject() {
+      if (this.activeProject < this.projectsList.length - 1) {
+        this.activeProject++;
+      } else {
+        this.activeProject = 0;
+      }
+      this.scrollAutocomplete();
+    },
+    scrollAutocomplete() {
+      if (!document.getElementsByClassName('autocompleteItemBtn')[this.activeProject]) return;
+      const elementHeight =
+        document.getElementsByClassName('autocompleteItemBtn')[this.activeProject].offsetHeight;
+      const offSet =
+        document.getElementsByClassName('autocompleteItemBtn')[this.activeProject].offsetTop +
+        elementHeight;
+      const clientHeight = document.getElementById('projectsDropdown').clientHeight;
+      document.getElementById('projectsDropdown').scrollTop = offSet - clientHeight;
+    },
+    filterProject(event) {
+      this.autocompleteIsActive = true;
+      if (!event.target.value) {
+        // reset list of users when no project is selected
+        this.displayData = this.rawData;
+        this.projectsList = this.allProjects;
+      } else {
+        this.projectsList = this.allProjects.filter((project) =>
+          project.name.toLowerCase().includes(event.target.value.toLowerCase())
+        );
+      }
     }
-})
+  }
+});
diff --git a/web/services/HolidayService.php b/web/services/HolidayService.php
index 6f3dcff23..aab4baedd 100644
--- a/web/services/HolidayService.php
+++ b/web/services/HolidayService.php
@@ -22,7 +22,8 @@
 
 use Phpreport\Model\facade;
 
-if (!defined('PHPREPORT_ROOT')) define('PHPREPORT_ROOT', __DIR__ . '/../../');
+if (!defined('PHPREPORT_ROOT'))
+    define('PHPREPORT_ROOT', __DIR__ . '/../../');
 
 include_once(PHPREPORT_ROOT . '/web/services/WebServicesFunctions.php');
 include_once(PHPREPORT_ROOT . '/model/facade/ProjectsFacade.php');
@@ -31,8 +32,7 @@
 include_once(PHPREPORT_ROOT . '/model/vo/UserVO.php');
 require_once(PHPREPORT_ROOT . '/util/LoginManager.php');
 
-class HolidayService
-{
+class HolidayService {
     private \LoginManager $loginManager;
     private string $sid;
 
@@ -44,9 +44,9 @@ public function __construct(
         $this->sid = $sid;
     }
 
-    function isWeekend(string $date): bool
+    function isWeekend(string $date) : bool
     {
-        return (date('N', strtotime($date)) >= 6);
+        return(date('N', strtotime($date)) >= 6);
     }
 
     /** Group dates into date ranges
@@ -78,7 +78,7 @@ function isWeekend(string $date): bool
      *    ]
      * ]
      */
-    public function datesToRanges(array $vacations): array
+    public function datesToRanges(array $vacations) : array
     {
         if (count($vacations) == 0) {
             return [];
@@ -113,7 +113,7 @@ public function datesToRanges(array $vacations): array
     /**
      * Function used to pretty print time. From hours to Days d hours:minutes
      */
-    static function formatHours(float $time, float $journey, int $limit): string
+    static function formatHours(float $time, float $journey, int $limit) : string
     {
         $negative = ($time < 0);
         $work_days = false;
@@ -153,11 +153,11 @@ static function formatHours(float $time, float $journey, int $limit): string
         return $formatedHours;
     }
 
-    static function getWeeksFromYear($year = NULL): array
+    static function getWeeksFromYear($year = NULL) : array
     {
         $weeks = [];
         $year = $year ?? date('Y');
-        $first_week = (int)date('W', mktime(0, 0, 0, 1, 1, $year));
+        $first_week = (int) date('W', mktime(0, 0, 0, 1, 1, $year));
         $last_week = (int) date('W', mktime(0, 0, 0, 12, 31, $year));
         if ($first_week == 52 || $first_week == 53) {
             $weeks[($year - 1) . "W" . $first_week] = 0;
@@ -177,9 +177,10 @@ static function getWeeksFromYear($year = NULL): array
         return $weeks;
     }
 
-    static function groupByWeeks(array $leavesDetails, $weeks = []): array
+    static function groupByWeeks(array $leavesDetails, $weeks = []) : array
     {
-        if (count($leavesDetails) == 0) return [];
+        if (count($leavesDetails) == 0)
+            return [];
         $dates = array_keys($leavesDetails);
         $previous_week = date("o\WW", strtotime($dates[0]));
         $weeks[$previous_week] = $leavesDetails[$dates[0]]['amount'] ?? 1;
@@ -196,13 +197,17 @@ static function groupByWeeks(array $leavesDetails, $weeks = []): array
         return $weeks;
     }
 
-    static function mapHalfLeaves($dates, array $journeyHistories): array
+    static function mapHalfLeaves($dates, array $journeyHistories) : array
     {
         foreach ($dates as $day => $duration) {
-            $validJourney = array_filter($journeyHistories, fn ($history) => $history->dateBelongsToHistory(
-                date_create($day)
-            ));
-            if (count($validJourney) == 0) continue;
+            $validJourney = array_filter(
+                $journeyHistories,
+                fn($history) => $history->dateBelongsToHistory(
+                    date_create($day)
+                )
+            );
+            if (count($validJourney) == 0)
+                continue;
             $validJourney = array_pop($validJourney);
             if (($validJourney->getJourney() * 60) > ($duration['end'] - $duration['init'])) {
                 $dates[$day]['isPartialLeave'] = True;
@@ -212,7 +217,7 @@ static function mapHalfLeaves($dates, array $journeyHistories): array
         return $dates;
     }
 
-    static function getDaysBetweenDates(string $init, string $end): array
+    static function getDaysBetweenDates(string $init, string $end) : array
     {
         $begin = new \DateTime($init);
         $end = new \DateTime($end);
@@ -229,7 +234,7 @@ static function getDaysBetweenDates(string $init, string $end): array
         return $dates;
     }
 
-    public function getUserVacationsRanges(string $init = NULL, string $end = NULL, $sid = NULL, $userLogin = NULL): array
+    public function getUserVacationsRanges(string $init = NULL, string $end = NULL, $sid = NULL, $userLogin = NULL) : array
     {
         if (!$this->loginManager::isLogged($sid)) {
             return ['error' => 'User not logged in'];
@@ -257,12 +262,12 @@ public function getUserVacationsRanges(string $init = NULL, string $end = NULL,
         ];
     }
 
-    public function deleteVacations(array $daysToDelete, \UserVO $userVO, int $holidayProjectId): array
+    public function deleteVacations(array $daysToDelete, \UserVO $userVO, int $holidayProjectId) : array
     {
         $failed = [];
         foreach ($daysToDelete as &$day) {
             $tasks = \TasksFacade::GetUserTasksByLoginDate($userVO, new \DateTime($day));
-            $holidayTasks = array_filter($tasks, fn ($task) => $task->getProjectId() == $holidayProjectId);
+            $holidayTasks = array_filter($tasks, fn($task) => $task->getProjectId() == $holidayProjectId);
             if (\TasksFacade::DeleteReports($holidayTasks) == -1)
                 $failed[] = $day;
         }
@@ -273,17 +278,21 @@ public function deleteVacations(array $daysToDelete, \UserVO $userVO, int $holid
         ];
     }
 
-    public function createVacations(array $daysToCreate, \UserVO $userVO, int $holidayProjectId, string $description = ''): array
+    public function createVacations(array $daysToCreate, \UserVO $userVO, int $holidayProjectId, string $description = '') : array
     {
         $journeyHistories = \UsersFacade::GetUserJourneyHistories($userVO->getLogin());
         $failed = [];
         foreach ($daysToCreate as &$day) {
-            if ($this->isWeekend($day)) continue;
+            if ($this->isWeekend($day))
+                continue;
 
             $currentDay = date_create($day);
-            $validJourney = array_filter($journeyHistories, fn ($history) =>  $history->dateBelongsToHistory(
-                $currentDay
-            ));
+            $validJourney = array_filter(
+                $journeyHistories,
+                fn($history) => $history->dateBelongsToHistory(
+                    $currentDay
+                )
+            );
             if (count($validJourney) != 1) {
                 $failed[] = $day;
                 continue;
@@ -309,7 +318,7 @@ public function createVacations(array $daysToCreate, \UserVO $userVO, int $holid
         ];
     }
 
-    public function updateUserVacations(array $vacations, string $init, string $end): array
+    public function updateUserVacations(array $vacations, string $init, string $end) : array
     {
         if (!$this->loginManager::isLogged()) {
             return ['error' => 'User not logged in'];
@@ -327,11 +336,13 @@ public function updateUserVacations(array $vacations, string $init, string $end)
         $userVO->setLogin($_SESSION['user']->getLogin());
         $userVO->setId($_SESSION['user']->getId());
 
-        $existingVacations = array_keys(\UsersFacade::GetScheduledHolidays(
-            date_create($init),
-            date_create($end),
-            $userVO
-        ));
+        $existingVacations = array_keys(
+            \UsersFacade::GetScheduledHolidays(
+                date_create($init),
+                date_create($end),
+                $userVO
+            )
+        );
         $holidayProjectId = \TasksFacade::GetVacationsProjectId();
         $daysToDelete = array_diff($existingVacations, $vacations);
         $resultDeleted = $this->deleteVacations($daysToDelete, $userVO, $holidayProjectId);
@@ -346,7 +357,7 @@ public function updateUserVacations(array $vacations, string $init, string $end)
         ];
     }
 
-    public function updateLongLeaves(string $init, string $end, string $user, string $projectId, string $description = ''): array
+    public function updateLongLeaves(string $init, string $end, string $user, string $projectId, string $description = '') : array
     {
         if (!$this->loginManager::isLogged($this->sid)) {
             return ['error' => 'User not logged in'];
@@ -390,7 +401,7 @@ public function syncCalDAVCalendar(array $datesRanges = [])
         return ['message' => 'Calendar synced'];
     }
 
-    public function retrieveHolidaysSummary(string $year = NULL): array
+    public function retrieveHolidaysSummary(string $year = NULL) : array
     {
         if (!$this->loginManager::isLogged()) {
             return ['error' => 'User not logged in'];
@@ -406,6 +417,13 @@ public function retrieveHolidaysSummary(string $year = NULL): array
 
         $users = \UsersFacade::GetAllActiveUsers($filterEmployees = true);
         $weeks = $this::getWeeksFromYear($year);
+        $weeksStartDays = [];
+        foreach (array_keys($weeks) as $week) {
+            $yearOfWeek = explode('W', $week)[0];
+            $weekNumber = explode('W', $week)[1];
+            $weekStartDate = date('M d', strtotime($yearOfWeek . '-W' . $weekNumber . '-1'));
+            $weeksStartDays[] = array("week" => $yearOfWeek . "W" . $weekNumber, "weekStartDate" => $weekStartDate);
+        }
         $holidays = [];
         foreach ($users as &$user) {
             $holidays[$user->getLogin()] = \UsersFacade::GetHolidaySummaryReport(
@@ -420,7 +438,8 @@ public function retrieveHolidaysSummary(string $year = NULL): array
         asort($holidays);
         return [
             "holidays" => $holidays,
-            "weeks" => $weeks
+            "weeks" => $weeks,
+            "weeksStartDays" => $weeksStartDays
         ];
     }
 }