diff --git a/application/Espo/Core/Formula/Functions/DatetimeGroup/HourType.php b/application/Espo/Core/Formula/Functions/DatetimeGroup/HourType.php
new file mode 100644
index 0000000000..59d3f64b1e
--- /dev/null
+++ b/application/Espo/Core/Formula/Functions/DatetimeGroup/HourType.php
@@ -0,0 +1,67 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM - Open Source CRM application.
+ * Copyright (C) 2014-2017 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
+ * Website: http://www.espocrm.com
+ *
+ * EspoCRM is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EspoCRM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Formula\Functions\DateTimeGroup;
+
+use \Espo\Core\Exceptions\Error;
+
+class HourType extends \Espo\Core\Formula\Functions\Base
+{
+    protected function init()
+    {
+        $this->addDependency('dateTime');
+    }
+
+    public function process(\StdClass $item)
+    {
+        if (!property_exists($item, 'value')) {
+            return true;
+        }
+
+        if (!is_array($item->value)) {
+            throw new Error();
+        }
+
+        if (count($item->value) < 1) {
+             throw new Error();
+        }
+
+        $value = $this->evaluate($item->value[0]);
+
+        if (empty($value)) return -1;
+
+        if (strlen($value) > 11) {
+            $resultString = $this->getInjection('dateTime')->convertSystemDateTime($value, null, 'H');
+        } else {
+            return 0;
+        }
+
+        return intval($resultString);
+    }
+}
\ No newline at end of file
diff --git a/application/Espo/Core/Formula/Functions/DatetimeGroup/MinuteType.php b/application/Espo/Core/Formula/Functions/DatetimeGroup/MinuteType.php
new file mode 100644
index 0000000000..00201359fc
--- /dev/null
+++ b/application/Espo/Core/Formula/Functions/DatetimeGroup/MinuteType.php
@@ -0,0 +1,67 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM - Open Source CRM application.
+ * Copyright (C) 2014-2017 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
+ * Website: http://www.espocrm.com
+ *
+ * EspoCRM is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EspoCRM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Formula\Functions\DateTimeGroup;
+
+use \Espo\Core\Exceptions\Error;
+
+class MinuteType extends \Espo\Core\Formula\Functions\Base
+{
+    protected function init()
+    {
+        $this->addDependency('dateTime');
+    }
+
+    public function process(\StdClass $item)
+    {
+        if (!property_exists($item, 'value')) {
+            return true;
+        }
+
+        if (!is_array($item->value)) {
+            throw new Error();
+        }
+
+        if (count($item->value) < 1) {
+             throw new Error();
+        }
+
+        $value = $this->evaluate($item->value[0]);
+
+        if (empty($value)) return -1;
+
+        if (strlen($value) > 11) {
+            $resultString = $this->getInjection('dateTime')->convertSystemDateTime($value, null, 'm');
+        } else {
+            return 0;
+        }
+
+        return intval($resultString);
+    }
+}
\ No newline at end of file
diff --git a/tests/unit/Espo/Core/Formula/FormulaTest.php b/tests/unit/Espo/Core/Formula/FormulaTest.php
index 2570597df5..e11a1ee307 100644
--- a/tests/unit/Espo/Core/Formula/FormulaTest.php
+++ b/tests/unit/Espo/Core/Formula/FormulaTest.php
@@ -1251,6 +1251,68 @@ class FormulaTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals(20, $actual);
     }
 
+    function testDatetimeHour()
+    {
+        $item = json_decode('
+            {
+                "type": "datetime\\\\hour",
+                "value": [
+                    {
+                        "type": "value",
+                        "value": "2017-10-02 14:15"
+                    }
+                ]
+            }
+        ');
+        $actual = $this->formula->process($item);
+        $this->assertEquals(14, $actual);
+
+        $item = json_decode('
+            {
+                "type": "datetime\\\\hour",
+                "value": [
+                    {
+                        "type": "value",
+                        "value": "2017-10-20"
+                    }
+                ]
+            }
+        ');
+        $actual = $this->formula->process($item);
+        $this->assertEquals(0, $actual);
+    }
+
+    function testDatetimeMinute()
+    {
+        $item = json_decode('
+            {
+                "type": "datetime\\\\minute",
+                "value": [
+                    {
+                        "type": "value",
+                        "value": "2017-10-02 14:05"
+                    }
+                ]
+            }
+        ');
+        $actual = $this->formula->process($item);
+        $this->assertEquals(5, $actual);
+
+        $item = json_decode('
+            {
+                "type": "datetime\\\\hour",
+                "value": [
+                    {
+                        "type": "value",
+                        "value": "2017-10-20"
+                    }
+                ]
+            }
+        ');
+        $actual = $this->formula->process($item);
+        $this->assertEquals(0, $actual);
+    }
+
     function testDatetimeDayOfWeek()
     {
         $item = json_decode('