diff --git a/enrol/self/tests/behat/self_enrolment.feature b/enrol/self/tests/behat/self_enrolment.feature
index 91551f027a2..c21729f6fc0 100644
--- a/enrol/self/tests/behat/self_enrolment.feature
+++ b/enrol/self/tests/behat/self_enrolment.feature
@@ -98,6 +98,7 @@ Feature: Users can auto-enrol themself in courses where self enrolment is allowe
     And I log in as "student1"
     And I am on "Course 1" course homepage
     And I press "Enrol me"
+    And I should see "You are enrolled in the course"
     And I log out
     And I log in as "teacher1"
     And I am on "Course 1" course homepage
@@ -118,6 +119,7 @@ Feature: Users can auto-enrol themself in courses where self enrolment is allowe
     And I log in as "student1"
     And I am on "Course 1" course homepage
     And I press "Enrol me"
+    And I should see "You are enrolled in the course"
     And I log out
     And I log in as "teacher1"
     And I am on "Course 1" course homepage
diff --git a/enrol/tests/enrollib_test.php b/enrol/tests/enrollib_test.php
index acd3e6086f1..34917c0f27b 100644
--- a/enrol/tests/enrollib_test.php
+++ b/enrol/tests/enrollib_test.php
@@ -1036,6 +1036,59 @@ class core_enrollib_testcase extends advanced_testcase {
         $this->assertEquals([$course1->id, $course2->id, $course3->id, $course4->id], array_keys($courses));
     }
 
+    /**
+     * Data provider for {@see test_enrol_get_my_courses_by_time}
+     *
+     * @return array
+     */
+    public function enrol_get_my_courses_by_time_provider(): array {
+        return [
+            'No start or end time' =>
+                [null, null, true],
+            'Start time now, no end time' =>
+                [0, null, true],
+            'Start time now, end time in the future' =>
+                [0, MINSECS, true],
+            'Start time in the past, no end time' =>
+                [-MINSECS, null, true],
+            'Start time in the past, end time in the future' =>
+                [-MINSECS, MINSECS, true],
+            'Start time in the past, end time in the past' =>
+                [-DAYSECS, -HOURSECS, false],
+            'Start time in the future' =>
+                [MINSECS, null, false],
+        ];
+    }
+
+    /**
+     * Test that expected course enrolments are returned when they have timestart / timeend specified
+     *
+     * @param int|null $timestartoffset Null for 0, otherwise offset from current time
+     * @param int|null $timeendoffset Null for 0, otherwise offset from current time
+     * @param bool $expectreturn
+     *
+     * @dataProvider enrol_get_my_courses_by_time_provider
+     */
+    public function test_enrol_get_my_courses_by_time(?int $timestartoffset, ?int $timeendoffset, bool $expectreturn): void {
+        $this->resetAfterTest();
+
+        $time = time();
+        $timestart = $timestartoffset === null ? 0 : $time + $timestartoffset;
+        $timeend = $timeendoffset === null ? 0 : $time + $timeendoffset;
+
+        $course = $this->getDataGenerator()->create_course();
+        $user = $this->getDataGenerator()->create_and_enrol($course, 'student', null, 'manual', $timestart, $timeend);
+        $this->setUser($user);
+
+        $courses = enrol_get_my_courses();
+        if ($expectreturn) {
+            $this->assertCount(1, $courses);
+            $this->assertEquals($course->id, reset($courses)->id);
+        } else {
+            $this->assertEmpty($courses);
+        }
+    }
+
     /**
      * test_course_users
      *
diff --git a/lib/enrollib.php b/lib/enrollib.php
index 7b40ca068ce..286eb63e169 100644
--- a/lib/enrollib.php
+++ b/lib/enrollib.php
@@ -664,13 +664,12 @@ function enrol_get_my_courses($fields = null, $sort = null, $limit = 0, $coursei
                 SELECT DISTINCT e.courseid
                   FROM {enrol} e
                   JOIN {user_enrolments} ue ON (ue.enrolid = e.id AND ue.userid = :userid1)
-                 WHERE ue.status = :active AND e.status = :enabled AND ue.timestart < :now1
+                 WHERE ue.status = :active AND e.status = :enabled AND ue.timestart <= :now1
                        AND (ue.timeend = 0 OR ue.timeend > :now2)";
         $params['userid1'] = $USER->id;
         $params['active'] = ENROL_USER_ACTIVE;
         $params['enabled'] = ENROL_INSTANCE_ENABLED;
-        $params['now1'] = round(time(), -2); // Improves db caching.
-        $params['now2'] = $params['now1'];
+        $params['now1'] = $params['now2'] = time();
 
         if ($sorttimeaccess) {
             $params['userid2'] = $USER->id;
diff --git a/lib/navigationlib.php b/lib/navigationlib.php
index 531056ef798..90ab2956786 100644
--- a/lib/navigationlib.php
+++ b/lib/navigationlib.php
@@ -3670,7 +3670,8 @@ class navbar extends navigation_node {
         }
 
         // Don't show the 'course' node if enrolled in this course.
-        if (!is_enrolled(context_course::instance($this->page->course->id, null, '', true))) {
+        $coursecontext = context_course::instance($this->page->course->id);
+        if (!is_enrolled($coursecontext, null, '', true)) {
             $courses = $this->page->navigation->get('courses');
             if (!$courses) {
                 // Courses node may not be present.