diff --git a/Base/res/apps/CalendarSettings.af b/Base/res/apps/CalendarSettings.af
new file mode 100644
index 00000000000..8aeb9e3afa2
--- /dev/null
+++ b/Base/res/apps/CalendarSettings.af
@@ -0,0 +1,5 @@
+[App]
+Name=Calendar Settings
+Executable=/bin/CalendarSettings
+Category=Settings
+Description=Configure the Calendar application and applet
diff --git a/Userland/Applications/CMakeLists.txt b/Userland/Applications/CMakeLists.txt
index 3842e2e6acc..936366cc3ff 100644
--- a/Userland/Applications/CMakeLists.txt
+++ b/Userland/Applications/CMakeLists.txt
@@ -6,6 +6,7 @@ add_subdirectory(Browser)
 add_subdirectory(BrowserSettings)
 add_subdirectory(Calculator)
 add_subdirectory(Calendar)
+add_subdirectory(CalendarSettings)
 add_subdirectory(CharacterMap)
 add_subdirectory(ClockSettings)
 add_subdirectory(CrashReporter)
diff --git a/Userland/Applications/Calendar/main.cpp b/Userland/Applications/Calendar/main.cpp
index 67a5d509355..b1c7d7223b8 100644
--- a/Userland/Applications/Calendar/main.cpp
+++ b/Userland/Applications/Calendar/main.cpp
@@ -6,12 +6,12 @@
 
 #include "AddEventDialog.h"
 #include <Applications/Calendar/CalendarWindowGML.h>
+#include <LibConfig/Client.h>
 #include <LibCore/System.h>
 #include <LibGUI/Action.h>
 #include <LibGUI/ActionGroup.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
 #include <LibGUI/Calendar.h>
 #include <LibGUI/Icon.h>
 #include <LibGUI/Menu.h>
@@ -26,6 +26,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
     auto app = TRY(GUI::Application::try_create(arguments));
 
+    Config::pledge_domain("Calendar");
+
     TRY(Core::System::pledge("stdio recvfd sendfd rpath"));
     TRY(Core::System::unveil("/etc/timezone", "r"));
     TRY(Core::System::unveil("/res", "r"));
diff --git a/Userland/Applications/CalendarSettings/CMakeLists.txt b/Userland/Applications/CalendarSettings/CMakeLists.txt
new file mode 100644
index 00000000000..986dfef1736
--- /dev/null
+++ b/Userland/Applications/CalendarSettings/CMakeLists.txt
@@ -0,0 +1,17 @@
+serenity_component(
+    CalendarSettings
+    RECOMMENDED
+    TARGETS CalendarSettings
+)
+
+compile_gml(CalendarSettingsWidget.gml CalendarSettingsWidgetGML.h calendar_settings_widget_gml)
+
+set(SOURCES
+    main.cpp
+    CalendarSettingsWidget.cpp
+    CalendarSettingsWidget.h
+    CalendarSettingsWidgetGML.h
+)
+
+serenity_app(CalendarSettings ICON app-calendar)
+target_link_libraries(CalendarSettings LibConfig LibGUI LibMain)
diff --git a/Userland/Applications/CalendarSettings/CalendarSettingsWidget.cpp b/Userland/Applications/CalendarSettings/CalendarSettingsWidget.cpp
new file mode 100644
index 00000000000..72d4976f86e
--- /dev/null
+++ b/Userland/Applications/CalendarSettings/CalendarSettingsWidget.cpp
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2022-2022, Olivier De Cannière <olivier.decanniere96@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "CalendarSettingsWidget.h"
+#include <AK/DateConstants.h>
+#include <Applications/CalendarSettings/CalendarSettingsWidgetGML.h>
+#include <LibConfig/Client.h>
+#include <LibGUI/ItemListModel.h>
+
+void CalendarSettingsWidget::apply_settings()
+{
+    Config::write_string("Calendar"sv, "View"sv, "FirstDayOfWeek"sv, m_first_day_of_week_combobox->text());
+}
+
+void CalendarSettingsWidget::reset_default_values()
+{
+    m_first_day_of_week_combobox->set_text("Sunday");
+}
+
+CalendarSettingsWidget::CalendarSettingsWidget()
+{
+    load_from_gml(calendar_settings_widget_gml);
+    m_first_day_of_week_combobox = *find_descendant_of_type_named<GUI::ComboBox>("first_day_of_week");
+    m_first_day_of_week_combobox->set_text(Config::read_string("Calendar"sv, "View"sv, "FirstDayOfWeek"sv, "Sunday"sv));
+    m_first_day_of_week_combobox->set_only_allow_values_from_model(true);
+    m_first_day_of_week_combobox->set_model(*GUI::ItemListModel<StringView, Array<StringView, 7>>::create(AK::long_day_names));
+    m_first_day_of_week_combobox->on_change = [&](auto, auto) {
+        set_modified(true);
+    };
+}
diff --git a/Userland/Applications/CalendarSettings/CalendarSettingsWidget.gml b/Userland/Applications/CalendarSettings/CalendarSettingsWidget.gml
new file mode 100644
index 00000000000..8403a640e56
--- /dev/null
+++ b/Userland/Applications/CalendarSettings/CalendarSettingsWidget.gml
@@ -0,0 +1,38 @@
+@GUI::Frame {
+    fill_with_background_color: true
+    layout: @GUI::VerticalBoxLayout {
+        margins: [8]
+        spacing: 5
+    }
+
+    @GUI::GroupBox {
+        title: "Preferred first day of week"
+        fixed_height: 72
+        layout: @GUI::VerticalBoxLayout {
+            margins: [6]
+            spacing: 2
+        }
+
+        @GUI::Label {
+            text: "Determines which day a week starts with in the calendar view."
+            word_wrap: true
+            text_alignment: "CenterLeft"
+        }
+
+        @GUI::Widget {
+            layout: @GUI::HorizontalBoxLayout {
+                spacing: 16
+            }
+
+            @GUI::Label {
+                text: "First day:"
+                text_alignment: "CenterLeft"
+                fixed_width: 70
+            }
+
+           @GUI::ComboBox {
+               name: "first_day_of_week"
+           }
+        }
+    }
+}
diff --git a/Userland/Applications/CalendarSettings/CalendarSettingsWidget.h b/Userland/Applications/CalendarSettings/CalendarSettingsWidget.h
new file mode 100644
index 00000000000..b0335374729
--- /dev/null
+++ b/Userland/Applications/CalendarSettings/CalendarSettingsWidget.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2022-2022, Olivier De Cannière <olivier.decanniere96@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGUI/ComboBox.h>
+#include <LibGUI/SettingsWindow.h>
+
+class CalendarSettingsWidget final : public GUI::SettingsWindow::Tab {
+    C_OBJECT(CalendarSettingsWidget)
+
+public:
+    virtual void apply_settings() override;
+    virtual void reset_default_values() override;
+
+private:
+    CalendarSettingsWidget();
+
+    RefPtr<GUI::ComboBox> m_first_day_of_week_combobox;
+};
diff --git a/Userland/Applications/CalendarSettings/main.cpp b/Userland/Applications/CalendarSettings/main.cpp
new file mode 100644
index 00000000000..1ff2cf5fecd
--- /dev/null
+++ b/Userland/Applications/CalendarSettings/main.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2022-2022, Olivier De Cannière <olivier.decanniere96@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "CalendarSettingsWidget.h"
+#include <LibConfig/Client.h>
+#include <LibCore/ArgsParser.h>
+#include <LibCore/System.h>
+#include <LibGUI/Application.h>
+#include <LibGUI/Icon.h>
+#include <LibGUI/SettingsWindow.h>
+#include <LibMain/Main.h>
+
+ErrorOr<int> serenity_main(Main::Arguments arguments)
+{
+    TRY(Core::System::pledge("stdio rpath recvfd sendfd unix"));
+
+    auto app = TRY(GUI::Application::try_create(arguments));
+
+    Config::pledge_domain("Calendar");
+
+    StringView selected_tab;
+    Core::ArgsParser args_parser;
+    args_parser.add_option(selected_tab, "Tab, only option is 'calendar'", "open-tab", 't', "tab");
+    args_parser.parse(arguments);
+
+    TRY(Core::System::pledge("stdio rpath recvfd sendfd"));
+    TRY(Core::System::unveil("/res", "r"));
+    TRY(Core::System::unveil(nullptr, nullptr));
+
+    auto app_icon = GUI::Icon::default_icon("app-calendar"sv);
+
+    auto window = TRY(GUI::SettingsWindow::create("Calendar Settings", GUI::SettingsWindow::ShowDefaultsButton::Yes));
+    (void)TRY(window->add_tab<CalendarSettingsWidget>("Calendar"sv, "Calendar"sv));
+    window->set_icon(app_icon.bitmap_for_size(16));
+    window->set_active_tab(selected_tab);
+
+    window->show();
+    return app->exec();
+}
diff --git a/Userland/Libraries/LibGUI/Calendar.cpp b/Userland/Libraries/LibGUI/Calendar.cpp
index 1ce01c89be1..2de848fa4b3 100644
--- a/Userland/Libraries/LibGUI/Calendar.cpp
+++ b/Userland/Libraries/LibGUI/Calendar.cpp
@@ -6,6 +6,7 @@
  */
 
 #include <AK/DateConstants.h>
+#include <LibConfig/Client.h>
 #include <LibCore/DateTime.h>
 #include <LibGUI/Calendar.h>
 #include <LibGUI/Painter.h>
@@ -26,6 +27,9 @@ Calendar::Calendar(Core::DateTime date_time, Mode mode)
     : m_selected_date(date_time)
     , m_mode(mode)
 {
+    auto first_day_of_week = Config::read_string("Calendar"sv, "View"sv, "FirstDayOfWeek"sv, "Sunday"sv);
+    m_first_day_of_week = static_cast<DayOfWeek>(day_of_week_index(first_day_of_week));
+
     set_fill_with_background_color(true);
 
     for (int i = 0; i < 7; i++) {
@@ -736,4 +740,10 @@ void Calendar::doubleclick_event(GUI::MouseEvent& event)
         }
     }
 }
+
+size_t Calendar::day_of_week_index(String const& day_name)
+{
+    auto const& day_names = AK::long_day_names;
+    return AK::find_index(day_names.begin(), day_names.end(), day_name);
+}
 }
diff --git a/Userland/Libraries/LibGUI/Calendar.h b/Userland/Libraries/LibGUI/Calendar.h
index 9ca630cf446..79c105d913b 100644
--- a/Userland/Libraries/LibGUI/Calendar.h
+++ b/Userland/Libraries/LibGUI/Calendar.h
@@ -75,6 +75,8 @@ private:
     Calendar(Core::DateTime date_time = Core::DateTime::now(), Mode mode = Month);
     virtual ~Calendar() override = default;
 
+    static size_t day_of_week_index(String const&);
+
     virtual void resize_event(GUI::ResizeEvent&) override;
     virtual void paint_event(GUI::PaintEvent&) override;
     virtual void mousemove_event(GUI::MouseEvent&) override;
diff --git a/Userland/Services/Taskbar/TaskbarWindow.cpp b/Userland/Services/Taskbar/TaskbarWindow.cpp
index f79c8e28923..0cc4a5f1918 100644
--- a/Userland/Services/Taskbar/TaskbarWindow.cpp
+++ b/Userland/Services/Taskbar/TaskbarWindow.cpp
@@ -101,6 +101,9 @@ TaskbarWindow::TaskbarWindow(NonnullRefPtr<GUI::Menu> start_menu)
 
 void TaskbarWindow::config_string_did_change(String const& domain, String const& group, String const& key, String const& value)
 {
+    if (domain == "Calendar"sv)
+        return;
+
     VERIFY(domain == "Taskbar");
     if (group == "Clock" && key == "TimeFormat") {
         m_clock_widget->update_format(value);
diff --git a/Userland/Services/Taskbar/main.cpp b/Userland/Services/Taskbar/main.cpp
index 2459297fc83..25b817ccffe 100644
--- a/Userland/Services/Taskbar/main.cpp
+++ b/Userland/Services/Taskbar/main.cpp
@@ -48,7 +48,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     TRY(Core::System::pledge("stdio recvfd sendfd proc exec rpath unix sigaction"));
     auto app = TRY(GUI::Application::try_create(arguments));
-    Config::pledge_domain("Taskbar");
+    Config::pledge_domains({ "Taskbar", "Calendar" });
     Config::monitor_domain("Taskbar");
     app->event_loop().register_signal(SIGCHLD, [](int) {
         // Wait all available children