diff --git a/test/test_scheduled_host_transition.cpp b/test/test_scheduled_host_transition.cpp
index 58e7aea..f148b59 100644
--- a/test/test_scheduled_host_transition.cpp
+++ b/test/test_scheduled_host_transition.cpp
@@ -17,6 +17,8 @@
 using namespace std::chrono;
 using InvalidTimeError =
     sdbusplus::xyz::openbmc_project::ScheduledTime::Error::InvalidTime;
+using HostTransition =
+    sdbusplus::xyz::openbmc_project::State::server::ScheduledHostTransition;
 
 class TestScheduledHostTransition : public testing::Test
 {
@@ -42,6 +44,11 @@
     {
         return scheduledHostTransition.timer.isEnabled();
     }
+
+    void bmcTimeChange()
+    {
+        scheduledHostTransition.handleTimeUpdates();
+    }
 };
 
 TEST_F(TestScheduledHostTransition, disableHostTransition)
@@ -78,6 +85,32 @@
     EXPECT_EQ(scheduledHostTransition.scheduledTransition(), Transition::Off);
 }
 
+TEST_F(TestScheduledHostTransition, bmcTimeChangeWithDisabledHostTransition)
+{
+    // Disable host transition
+    scheduledHostTransition.scheduledTime(0);
+    bmcTimeChange();
+    // Check timer
+    EXPECT_FALSE(isTimerEnabled());
+    // Check scheduled time
+    EXPECT_EQ(scheduledHostTransition.HostTransition::scheduledTime(), 0);
+}
+
+TEST_F(TestScheduledHostTransition, bmcTimeChangeBackward)
+{
+    // Current time is earlier than scheduled time due to BMC time changing
+    uint64_t schTime =
+        static_cast<uint64_t>((getCurrentTime() + seconds(60)).count());
+    // Set scheduled time, which is the same as bmc time is changed.
+    // But can't use this method to write another case like
+    // bmcTimeChangeForward, because set a scheduled time earlier than current
+    // time will throw an error.
+    scheduledHostTransition.scheduledTime(schTime);
+    bmcTimeChange();
+    // Check timer
+    EXPECT_TRUE(isTimerEnabled());
+}
+
 } // namespace manager
 } // namespace state
 } // namespace phosphor