diff --git a/lang/en/course.php b/lang/en/course.php
index a4e069df29f..4e43f8798fe 100644
--- a/lang/en/course.php
+++ b/lang/en/course.php
@@ -33,6 +33,10 @@ $string['activitychoosertabmode_desc'] = "The activity chooser enables a teacher
 $string['activitychoosertabmodeone'] = 'Starred, All, Activities, Resources, Recommended';
 $string['activitychoosertabmodetwo'] = 'Starred, All, Recommended';
 $string['activitychoosertabmodethree'] = 'Starred, Activities, Resources, Recommended';
+$string['activitydate:closed'] = 'Closed:';
+$string['activitydate:closes'] = 'Closes:';
+$string['activitydate:opened'] = 'Opened:';
+$string['activitydate:opens'] = 'Opens:';
 $string['aria:coursecategory'] = 'Course category';
 $string['aria:courseimage'] = 'Course image';
 $string['aria:courseshortname'] = 'Course short name';
diff --git a/lib/classes/activity_dates.php b/lib/classes/activity_dates.php
new file mode 100644
index 00000000000..74564e0f68d
--- /dev/null
+++ b/lib/classes/activity_dates.php
@@ -0,0 +1,101 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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.
+//
+// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Contains the base class for fetching the important dates in an activity module for a given module instance and a user.
+ *
+ * @package   core
+ * @copyright Shamim Rezaie <shamim@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+declare(strict_types=1);
+
+namespace core;
+
+use cm_info;
+
+/**
+ * Class for fetching the  important dates of an activity module for a given module instance and a user.
+ *
+ * @copyright Shamim Rezaie <shamim@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class activity_dates {
+
+    /**
+     * @var cm_info The course module information object.
+     */
+    protected $cm;
+
+    /**
+     * @var int The user id.
+     */
+    protected $userid;
+
+    /**
+     * activity_dates constructor.
+     *
+     * @param cm_info $cm course module
+     * @param int $userid user id
+     */
+    public function __construct(cm_info $cm, int $userid) {
+        $this->cm = $cm;
+        $this->userid = $userid;
+    }
+
+    /**
+     * Returns a list of important dates in the given module for the user.
+     *
+     * @param cm_info $cm The course module information.
+     * @param int $userid The user ID.
+     * @return array|array[]
+     */
+    public static function get_dates_for_module(cm_info $cm, int $userid): array {
+        $cmdatesclassname = static::get_dates_classname($cm->modname);
+        if (!$cmdatesclassname) {
+            return [];
+        }
+
+        /** @var activity_dates $dates */
+        $dates = new $cmdatesclassname($cm, $userid);
+        return $dates->get_dates();
+    }
+
+    /**
+     * Fetches the module's dates class implementation if it's available.
+     *
+     * @param string $modname The activity module name. Usually from cm_info::modname.
+     * @return string|null
+     */
+    private static function get_dates_classname(string $modname): ?string {
+        $cmdatesclass = "mod_{$modname}\\dates";
+        if (class_exists($cmdatesclass) && is_subclass_of($cmdatesclass, self::class)) {
+            return $cmdatesclass;
+        }
+
+        return null;
+    }
+
+    /**
+     * Returns a list of important dates for this module.
+     *
+     * @return array[] Each element of the array is an array with keys:
+     *                 label - The label for the date
+     *                 timestamp - The date
+     */
+    protected abstract function get_dates(): array;
+}
diff --git a/mod/choice/classes/dates.php b/mod/choice/classes/dates.php
new file mode 100644
index 00000000000..ede2d4ffcbb
--- /dev/null
+++ b/mod/choice/classes/dates.php
@@ -0,0 +1,68 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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.
+//
+// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Contains the class for fetching the important dates in mod_choice for a given module instance and a user.
+ *
+ * @package   mod_choice
+ * @copyright Shamim Rezaie <shamim@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+declare(strict_types=1);
+
+namespace mod_choice;
+
+use core\activity_dates;
+
+/**
+ * Class for fetching the important dates in mod_choice for a given module instance and a user.
+ *
+ * @copyright Shamim Rezaie <shamim@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class dates extends activity_dates {
+
+    /**
+     * Returns a list of important dates in mod_choice
+     *
+     * @return array
+     */
+    protected function get_dates(): array {
+        $timeopen = $this->cm->customdata['timeopen'] ?? null;
+        $timeclose = $this->cm->customdata['timeclose'] ?? null;
+        $now = time();
+        $dates = [];
+
+        if ($timeopen) {
+            $openlabelid = $timeopen > $now ? 'activitydate:opens' : 'activitydate:opened';
+            $dates[] = [
+                'label' => get_string($openlabelid, 'course'),
+                'timestamp' => (int) $timeopen,
+            ];
+        }
+
+        if ($timeclose) {
+            $closelabelid = $timeclose > $now ? 'activitydate:closes' : 'activitydate:closed';
+            $dates[] = [
+                'label' => get_string($closelabelid, 'course'),
+                'timestamp' => (int) $timeclose,
+            ];
+        }
+
+        return $dates;
+    }
+}
diff --git a/mod/choice/tests/dates_test.php b/mod/choice/tests/dates_test.php
new file mode 100644
index 00000000000..0f0624a27b9
--- /dev/null
+++ b/mod/choice/tests/dates_test.php
@@ -0,0 +1,122 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle 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.
+//
+// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Contains unit tests for mod_choice\dates.
+ *
+ * @package   mod_choice
+ * @category   test
+ * @copyright Shamim Rezaie <shamim@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+declare(strict_types=1);
+
+namespace mod_choice;
+
+use advanced_testcase;
+use cm_info;
+use core\activity_dates;
+
+/**
+ * Class for unit testing mod_choice\dates.
+ *
+ * @copyright Shamim Rezaie <shamim@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class dates_testcase extends advanced_testcase {
+
+    /**
+     * Data provider for get_dates_for_module().
+     * @return array[]
+     */
+    public function get_dates_for_module_provider(): array {
+        $now = time();
+        $before = $now - DAYSECS;
+        $earlier = $before - DAYSECS;
+        $after = $now + DAYSECS;
+        $later = $after + DAYSECS;
+
+        return [
+            'without any dates' => [
+                null, null, []
+            ],
+            'only with opening time' => [
+                $after, null, [
+                    ['label' => 'Opens:', 'timestamp' => $after],
+                ]
+            ],
+            'only with closing time' => [
+                null, $after, [
+                    ['label' => 'Closes:', 'timestamp' => $after],
+                ]
+            ],
+            'with both times' => [
+                $after, $later, [
+                    ['label' => 'Opens:', 'timestamp' => $after],
+                    ['label' => 'Closes:', 'timestamp' => $later],
+                ]
+            ],
+            'between the dates' => [
+                $before, $after, [
+                    ['label' => 'Opened:', 'timestamp' => $before],
+                    ['label' => 'Closes:', 'timestamp' => $after],
+                ]
+            ],
+            'dates are past' => [
+                $earlier, $before, [
+                    ['label' => 'Opened:', 'timestamp' => $earlier],
+                    ['label' => 'Closed:', 'timestamp' => $before],
+                ]
+            ],
+        ];
+    }
+
+    /**
+     * Test for get_dates_for_module().
+     *
+     * @dataProvider get_dates_for_module_provider
+     * @param int|null $timeopen Time of opening the choice
+     * @param int|null $timeclose Time of closing the choice
+     * @param array $expected The expected value of calling get_dates_for_module()
+     */
+    public function test_get_dates_for_module(?int $timeopen, ?int $timeclose, array $expected): void {
+        $this->resetAfterTest();
+
+        $course = $this->getDataGenerator()->create_course();
+        $user = $this->getDataGenerator()->create_user();
+        $this->getDataGenerator()->enrol_user($user->id, $course->id);
+
+        $data = ['course' => $course->id];
+        if ($timeopen) {
+            $data['timeopen'] = $timeopen;
+        }
+        if ($timeclose) {
+            $data['timeclose'] = $timeclose;
+        }
+        $choice = $this->getDataGenerator()->create_module('choice', $data);
+
+        $this->setUser($user);
+
+        $cm = get_coursemodule_from_instance('choice', $choice->id);
+        // Make sure we're using a cm_info object.
+        $cm = cm_info::create($cm);
+
+        $dates = activity_dates::get_dates_for_module($cm, (int)$user->id);
+
+        $this->assertEquals($expected, $dates);
+    }
+}