diff --git a/Theme/Backend/Lang/Navigation.en.lang.php b/Theme/Backend/Lang/Navigation.en.lang.php
new file mode 100644
index 0000000..401fe56
--- /dev/null
+++ b/Theme/Backend/Lang/Navigation.en.lang.php
@@ -0,0 +1,18 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+$MODLANG['Navigation'] = [
+    'Calendar' => 'Calendar',
+];
diff --git a/Theme/Backend/Lang/api.en.lang.php b/Theme/Backend/Lang/api.en.lang.php
new file mode 100644
index 0000000..eea62f6
--- /dev/null
+++ b/Theme/Backend/Lang/api.en.lang.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+$MODLANG[1] = [
+];
diff --git a/Theme/Backend/Lang/en.lang.php b/Theme/Backend/Lang/en.lang.php
new file mode 100644
index 0000000..5823ee1
--- /dev/null
+++ b/Theme/Backend/Lang/en.lang.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+$MODLANG['Calendar'] = [
+    'Blocks'   => 'Blocks',
+    'Day'      => 'Day',
+    'Interval' => 'Interval',
+    'Layout'   => 'Layout',
+    'List'     => 'List',
+    'Month'    => 'Month',
+    'NewEvent'        => 'New Event',
+    'Settings' => 'Settings',
+    'Timeline' => 'Timeline',
+    'Week'     => 'Week',
+    'Year'     => 'Year',
+];
diff --git a/Theme/Backend/calendar-create.tpl.php b/Theme/Backend/calendar-create.tpl.php
new file mode 100644
index 0000000..e69de29
diff --git a/Theme/Backend/calendar-dashboard.tpl.php b/Theme/Backend/calendar-dashboard.tpl.php
new file mode 100644
index 0000000..86bb554
--- /dev/null
+++ b/Theme/Backend/calendar-dashboard.tpl.php
@@ -0,0 +1,104 @@
+<?php
+$calendar = $this->getData('calendar');
+?>
+<section class="wf-75 floatLeft">
+    <section class="box w-100">
+        <ul class="btns floatLeft">
+            <li><a href="<?= \phpOMS\Uri\UriFactory::build('/{/lang}/backend/calendar/dashboard?date=' . $calendar->getDate()->createModify(0, -1, 0)->format('Y-m-d')) ?>"><i class="fa fa-arrow-left"></i></a>
+            <li><a href="<?= \phpOMS\Uri\UriFactory::build('/{/lang}/backend/calendar/dashboard?date=' . $calendar->getDate()->createModify(0, 1, 0)->format('Y-m-d')) ?>"><i class="fa fa-arrow-right"></i></a>
+        </ul>
+        <ul class="btns floatRight">
+            <li><a href=""><?= $this->l11n->lang['Calendar']['Day'] ?></a>
+            <li><a href=""><?= $this->l11n->lang['Calendar']['Week'] ?></a>
+            <li><a href=""><?= $this->l11n->lang['Calendar']['Month'] ?></a>
+            <li><a href=""><?= $this->l11n->lang['Calendar']['Year'] ?></a>
+        </ul>
+    </section>
+    <section class="box w-100">
+        <div class="m-calendar-month">
+            <?php $current = new \phpOMS\Datatypes\SmartDateTime($calendar->getDate()->format('Y') . '-' . $calendar->getDate()->format('m') . '-' . '01'); for($i = 0; $i < 6; $i++) : ?>
+                <div class="wf-100">
+                <?php for($j = 0; $j < 7; $j++) : ?>
+                    <div contextmenu="calendar-day-menu" style="display: inline-block; box-sizing: border-box; width: 13.0%; height: 100px; border: 1px solid #000; margin: 0; padding: 3px; overflow: hidden">
+                    <?php if($calendar->getDate()->getFirstDayOfMonth() <= $i*7+$j+1 && $calendar->getDate()->getDaysOfMonth() >= $i*7+$j+1) {
+                        echo ($i*7+$j+1) . ' ' . $this->l11n->lang[0][jddayofweek($j, 1)];
+                    } else {
+                        echo (($i*7+$j+1)-$calendar->getDate()->getDaysOfMonth()) . ' ' . $this->l11n->lang[0][jddayofweek($j, 1)];
+                    } ?>
+                        <ul>
+                        <?php
+                        $events = $calendar->getEventByDate($current);
+                        $current->smartModify(0, 0, 1);
+                    foreach($events as $event) : ?>
+                        <li><span class="tag purple" style="white-space: nowrap;"><?= $event->getName(); ?></span>
+                    <?php endforeach; ?>
+                        </ul>
+                    </div>
+                <?php endfor; ?>
+                </div>
+            <?php endfor;?>
+        </div>
+    </section>
+</section>
+
+<section class="wf-25 floatLeft">
+    <section class="box w-100">
+        <h1>Title</h1>
+
+        <div class="inner">
+            <form>
+                <table class="layout wf-100">
+                    <tr>
+                        <td><label>Layout</label>
+                    <tr>
+                        <td><select>
+                                <option>
+                            </select>
+                </table>
+            </form>
+        </div>
+    </section>
+
+    <section class="box w-100">
+        <h1>Calendars</h1>
+
+        <div class="inner">
+            <ul class="boxed">
+                <li><i class="fa fa-times warning"></i> <span class="check"><input type="checkbox" id="iDefault" checked><label for="iDefault">Default</label></span><i class="fa fa-cogs floatRight"></i>
+            </ul>
+            <div class="spacer"></div>
+            <button><i class="fa fa-calendar-plus-o"></i> <?= $this->l11n->lang[0]['Add'] ?></button> <button><i class="fa fa-calendar-check-o"></i> <?= $this->l11n->lang[0]['Create'] ?></button>
+        </div>
+    </section>
+</section>
+
+<menu type="context" id="calendar-day-menu">
+    <menuitem label="<?= $this->l11n->lang['Calendar']['NewEvent'] ?>"></menuitem>
+</menu>
+
+<menu type="context" id="calendar-event-menu">
+    <menuitem label="Edit"></menuitem>
+    <menuitem label="Accept" disabled></menuitem>
+    <menuitem label="Re-Schedule"></menuitem>
+    <menuitem label="Decline"></menuitem>
+    <menuitem label="Delete"></menuitem>
+</menu>
+
+<div class="hidden">
+    <section class="box">
+        <div class="inner">
+            <form>
+                <table class="layout">
+                    <tr><td><label for="iTitle">Title</label>
+                    <tr><td><input type="text" id="">
+                    <tr><td><label for="iTitle">Description</label>
+                    <tr><td><textarea></textarea>
+                    <tr><td><label for="iTitle">To</label>
+                    <tr><td><input type="text" id="">
+                    <tr><td><label for="iTitle">Files</label>
+                    <tr><td><input type="text" id="">
+                </table>
+            </form>
+        </div>
+    </section>
+</div>
diff --git a/Theme/Backend/calendar-element-create.tpl.php b/Theme/Backend/calendar-element-create.tpl.php
new file mode 100644
index 0000000..e69de29
diff --git a/Theme/Backend/calendar-element-single.tpl.php b/Theme/Backend/calendar-element-single.tpl.php
new file mode 100644
index 0000000..e69de29
diff --git a/Theme/Backend/calendar-single.tpl.php b/Theme/Backend/calendar-single.tpl.php
new file mode 100644
index 0000000..e69de29