diff --git a/addons/hr_holidays/models/hr_leave.py b/addons/hr_holidays/models/hr_leave.py
index 0ad2618177b..649a0bfbeeb 100644
--- a/addons/hr_holidays/models/hr_leave.py
+++ b/addons/hr_holidays/models/hr_leave.py
@@ -318,6 +318,9 @@ class HolidaysRequest(models.Model):
             self.date_to = False
             return
 
+        if self.request_date_from > self.request_date_to:
+            self.request_date_to = self.request_date_from
+
         resource_calendar_id = self.employee_id.resource_calendar_id or self.env.company.resource_calendar_id
         domain = [('calendar_id', '=', resource_calendar_id.id), ('display_type', '=', False)]
         attendances = self.env['resource.calendar.attendance'].read_group(domain, ['ids:array_agg(id)', 'hour_from:min(hour_from)', 'hour_to:max(hour_to)', 'week_type', 'dayofweek', 'day_period'], ['week_type', 'dayofweek', 'day_period'], lazy=False)
diff --git a/addons/hr_holidays/models/hr_leave_type.py b/addons/hr_holidays/models/hr_leave_type.py
index 73e018023eb..8d8a08c64db 100644
--- a/addons/hr_holidays/models/hr_leave_type.py
+++ b/addons/hr_holidays/models/hr_leave_type.py
@@ -63,6 +63,9 @@ class HolidaysType(models.Model):
     virtual_remaining_leaves = fields.Float(
         compute='_compute_leaves', search='_search_virtual_remaining_leaves', string='Virtual Remaining Time Off',
         help='Maximum Time Off Allowed - Time Off Already Taken - Time Off Waiting Approval')
+    virtual_leaves_taken = fields.Float(
+        compute='_compute_leaves', string='Virtual Time Off Already Taken',
+        help='Sum of validated and non validated time off requests.')
     group_days_allocation = fields.Float(
         compute='_compute_group_days_allocation', string='Days Allocated')
     group_days_leave = fields.Float(
@@ -187,7 +190,7 @@ class HolidaysType(models.Model):
 
     def get_days(self, employee_id):
         # need to use `dict` constructor to create a dict per id
-        result = dict((id, dict(max_leaves=0, leaves_taken=0, remaining_leaves=0, virtual_remaining_leaves=0)) for id in self.ids)
+        result = dict((id, dict(max_leaves=0, leaves_taken=0, remaining_leaves=0, virtual_remaining_leaves=0, virtual_leaves_taken=0)) for id in self.ids)
 
         requests = self.env['hr.leave'].search([
             ('employee_id', '=', employee_id),
@@ -206,6 +209,9 @@ class HolidaysType(models.Model):
             status_dict['virtual_remaining_leaves'] -= (request.number_of_hours_display
                                                     if request.leave_type_request_unit == 'hour'
                                                     else request.number_of_days)
+            status_dict['virtual_leaves_taken'] += (request.number_of_hours_display
+                                                if request.leave_type_request_unit == 'hour'
+                                                else request.number_of_days)
             if request.state == 'validate':
                 status_dict['leaves_taken'] += (request.number_of_hours_display
                                             if request.leave_type_request_unit == 'hour'
@@ -240,6 +246,7 @@ class HolidaysType(models.Model):
                     'virtual_remaining_leaves': ('%.2f' % lt.virtual_remaining_leaves).rstrip('0').rstrip('.'),
                     'max_leaves': ('%.2f' % lt.max_leaves).rstrip('0').rstrip('.'),
                     'leaves_taken': ('%.2f' % lt.leaves_taken).rstrip('0').rstrip('.'),
+                    'virtual_leaves_taken': ('%.2f' % lt.virtual_leaves_taken).rstrip('0').rstrip('.'),
                     'request_unit': lt.request_unit,
                 }, lt.allocation_type, lt.validity_stop)
             for lt in leave_types]
@@ -266,6 +273,7 @@ class HolidaysType(models.Model):
             holiday_status.leaves_taken = result.get('leaves_taken', 0)
             holiday_status.remaining_leaves = result.get('remaining_leaves', 0)
             holiday_status.virtual_remaining_leaves = result.get('virtual_remaining_leaves', 0)
+            holiday_status.virtual_leaves_taken = result.get('virtual_leaves_taken', 0)
 
     def _compute_group_days_allocation(self):
         domain = [
diff --git a/addons/hr_holidays/static/src/js/time_off_calendar.js b/addons/hr_holidays/static/src/js/time_off_calendar.js
index 36dd3f6387e..b012aff2e1c 100644
--- a/addons/hr_holidays/static/src/js/time_off_calendar.js
+++ b/addons/hr_holidays/static/src/js/time_off_calendar.js
@@ -2,6 +2,7 @@ odoo.define('hr_holidays.dashboard.view_custo', function(require) {
     'use strict';
 
     var core = require('web.core');
+    var CalendarPopover = require('web.CalendarPopover');
     var CalendarController = require("web.CalendarController");
     var CalendarRenderer = require("web.CalendarRenderer");
     var CalendarView = require("web.CalendarView");
@@ -10,6 +11,18 @@ odoo.define('hr_holidays.dashboard.view_custo', function(require) {
     var _t = core._t;
     var QWeb = core.qweb;
 
+    var TimeOffCalendarPopover = CalendarPopover.extend({
+        template: 'hr_holidays.calendar.popover',
+
+        init: function (parent, eventInfo) {
+            this._super.apply(this, arguments);
+            const state = this.event.extendedProps.record.state;
+            this.canDelete = state && ['validate', 'refuse'].indexOf(state) === -1;
+            this.canEdit = state !== undefined;
+            this.display_name = this.event.extendedProps.record.display_name;
+            this.displayFields = [];
+        },
+    });
 
     var TimeOffCalendarController = CalendarController.extend({
         events: _.extend({}, CalendarController.prototype.events, {
@@ -83,7 +96,32 @@ odoo.define('hr_holidays.dashboard.view_custo', function(require) {
             });
         },
     });
-    var TimeOffCalendarRenderer = CalendarRenderer.extend({
+
+    var TimeOffPopoverRenderer = CalendarRenderer.extend({
+        config: _.extend({}, CalendarRenderer.prototype.config, {
+            CalendarPopover: TimeOffCalendarPopover,
+        }),
+
+        _getPopoverParams: function (eventData) {
+            let params = this._super.apply(this, arguments);
+            let calendarIcon;
+            let state = eventData.extendedProps.record.state;
+
+            if (state === 'validate') {
+                calendarIcon = 'fa-calendar-check-o';
+            } else if (state === 'refuse') {
+                calendarIcon = 'fa-calendar-times-o';
+            } else if(state) {
+                calendarIcon = 'fa-calendar-o';
+            }
+
+            params['title'] = eventData.extendedProps.record.display_name.split(':').slice(0, -1).join(':');
+            params['template'] = QWeb.render('hr_holidays.calendar.popover.placeholder', {color: this.getColor(eventData.color_index), calendarIcon: calendarIcon});
+            return params;
+        },
+    });
+
+    var TimeOffCalendarRenderer = TimeOffPopoverRenderer.extend({
         _render: function () {
             var self = this;
             return this._super.apply(this, arguments).then(function () {
@@ -108,5 +146,15 @@ odoo.define('hr_holidays.dashboard.view_custo', function(require) {
         }),
     });
 
+    /**
+     * Calendar shown in the "Everyone" menu
+     */
+    var TimeOffCalendarAllView = CalendarView.extend({
+        config: _.extend({}, CalendarView.prototype.config, {
+            Renderer: TimeOffPopoverRenderer,
+        }),
+    });
+
     viewRegistry.add('time_off_calendar', TimeOffCalendarView);
+    viewRegistry.add('time_off_calendar_all', TimeOffCalendarAllView);
 });
diff --git a/addons/hr_holidays/static/src/xml/time_off_calendar.xml b/addons/hr_holidays/static/src/xml/time_off_calendar.xml
index 31c1bf4f2e8..b041222d7fc 100644
--- a/addons/hr_holidays/static/src/xml/time_off_calendar.xml
+++ b/addons/hr_holidays/static/src/xml/time_off_calendar.xml
@@ -13,17 +13,17 @@
 
                 <div class="mt-2">
                     <t t-if="need_allocation">
-                        <span t-esc="timeoff[1]['leaves_taken']" class="o_timeoff_big o_timeoff_purple"/> / <span t-esc="timeoff[1]['max_leaves']"/> <t t-if="timeoff[1]['request_unit'] == 'hour'">Hours</t><t t-else="">Days</t>
+                        <span t-esc="timeoff[1]['virtual_remaining_leaves']" class="o_timeoff_big o_timeoff_purple"/> / <span t-esc="timeoff[1]['max_leaves']"/> <t t-if="timeoff[1]['request_unit'] == 'hour'">Hours</t><t t-else="">Days</t>
                     </t>
                     <t t-else="">
-                        <span t-esc="timeoff[1]['leaves_taken']" class="o_timeoff_big o_timeoff_purple"/> <t t-if="timeoff[1]['request_unit'] == 'hour'">Hours</t><t t-else="">Days</t>
+                        <span t-esc="timeoff[1]['virtual_leaves_taken']" class="o_timeoff_big o_timeoff_purple"/> <t t-if="timeoff[1]['request_unit'] == 'hour'">Hours</t><t t-else="">Days</t>
                     </t>
                 </div>
 
                 <b><span t-esc="timeoff[0]" class="o_timeoff_name"/></b>
 
                 <span class="mb-4" t-if="need_allocation">
-                    <span t-attf-class="mr-1 font-weight-bold {{ cl }}" t-esc="timeoff[1]['remaining_leaves']"/><span>remaining</span>
+                    <span t-attf-class="mr-1 font-weight-bold {{ cl }}" t-esc="timeoff[1]['virtual_leaves_taken']"/><span>taken</span>
                     <t t-if="timeoff[3]"> (Expire on <span t-esc="moment(timeoff[3]).format('L')"/>)</t>
                 </span>
             </div>
@@ -38,4 +38,41 @@
             <t t-esc="request"/>
         </button>
     </t>
+
+    <t t-name="hr_holidays.calendar.popover.placeholder">
+        <div t-attf-class="o_cw_popover popover card shadow #{typeof color === 'number' ? _.str.sprintf('o_calendar_color_%s', color) : ''}" role="tooltip">
+            <div class="arrow"/>
+            <div class="card-header d-flex justify-content-between py-2 pr-2">
+                <h4 class="popover-header border-0 p-0 pt-1"/>
+                <div class="ml-4">
+                    <i t-if="calendarIcon" t-attf-class="fa {{calendarIcon}}"></i>
+                    <span class="o_cw_popover_close ml-1"><i class="fa fa-close small"/></span>
+                </div>
+            </div>
+            <div class="o_cw_body">
+            </div>
+        </div>
+    </t>
+
+    <t t-name="hr_holidays.calendar.popover">
+        <div class="o_cw_body">
+            <ul class="list-group list-group-flush">
+                <li t-if="!widget.hideDate and widget.eventDate.date" class="list-group-item">
+                    <b class="text-capitalize" t-esc="widget.eventDate.date"/> <small t-if="widget.eventDate.duration"><b t-esc="_.str.sprintf('(%s)', widget.eventDate.duration)"/></small>
+                </li>
+                <li t-if="!widget.hideTime and widget.eventTime.time" class="list-group-item">
+                    <b t-esc="widget.eventTime.time"/> <small t-if="widget.eventTime.duration"><b t-esc="_.str.sprintf('(%s)', widget.eventTime.duration)"/></small>
+                </li>
+            </ul>
+            <ul class="list-group list-group-flush o_cw_popover_fields_secondary" t-if="widget.display_name">
+                <li class="list-group-item">
+                    <span class="o_field_char o_field_widget" t-esc="widget.display_name" />
+                </li>
+            </ul>
+            <div class="card-footer border-top" t-if="widget.canEdit or widget.canDelete">
+                <a t-if="widget.canEdit" href="#" class="btn btn-primary o_cw_popover_edit">Edit</a>
+                <a t-if="widget.canDelete" href="#" class="btn btn-secondary o_cw_popover_delete ml-2">Delete</a>
+            </div>
+        </div>
+    </t>
 </templates>
diff --git a/addons/hr_holidays/views/hr_leave_views.xml b/addons/hr_holidays/views/hr_leave_views.xml
index 863deafddcb..e9945f98ea1 100644
--- a/addons/hr_holidays/views/hr_leave_views.xml
+++ b/addons/hr_holidays/views/hr_leave_views.xml
@@ -359,6 +359,7 @@
             <calendar js_class="time_off_calendar" string="Time Off Request" form_view_id="%(hr_holidays.hr_leave_view_form_dashboard)d" event_open_popup="true" date_start="date_from" date_stop="date_to" mode="month" quick_add="False" show_unusual_days="True" color="employee_id" hide_time="True">
                 <field name="display_name"/>
                 <field name="employee_id" filters="1" invisible="1"/>
+                <field name="state" invisible="1"/>
             </calendar>
         </field>
     </record>
@@ -432,7 +433,7 @@
         <field name="name">hr.leave.view.calendar</field>
         <field name="model">hr.leave</field>
         <field name="arch" type="xml">
-            <calendar string="Time Off Request" event_open_popup="true" date_start="date_from" date_stop="date_to" mode="month" quick_add="False" color="employee_id">
+            <calendar js_class="time_off_calendar_all" string="Time Off Request" event_open_popup="true" date_start="date_from" date_stop="date_to" mode="month" quick_add="False" color="employee_id">
                 <field name="display_name"/>
                 <field name="employee_id" filters="1" invisible="1"/>
             </calendar>