diff --git a/redfish-core/src/utils/time_utils.cpp b/redfish-core/src/utils/time_utils.cpp
index fa49657..2d5e0cc 100644
--- a/redfish-core/src/utils/time_utils.cpp
+++ b/redfish-core/src/utils/time_utils.cpp
@@ -14,7 +14,8 @@
 
 std::optional<usSinceEpoch> dateStringToEpoch(std::string_view datetime)
 {
-    for (const char* format : std::to_array({"%FT%T%Ez", "%FT%TZ", "%FT%T"}))
+    for (const char* format : std::to_array(
+             {"%FT%T%Ez", "%FT%TZ", "%FT%T", "%Y%m%d", "%Y%m%dT%H%M%SZ"}))
     {
         // Parse using signed so we can detect negative dates
         std::chrono::sys_time<usSinceEpoch> date;
diff --git a/test/redfish-core/include/utils/time_utils_test.cpp b/test/redfish-core/include/utils/time_utils_test.cpp
index ca11097..aa6f53b 100644
--- a/test/redfish-core/include/utils/time_utils_test.cpp
+++ b/test/redfish-core/include/utils/time_utils_test.cpp
@@ -152,6 +152,13 @@
     EXPECT_EQ(dateStringToEpoch("2021-11-30T22:41:35"),
               usSinceEpoch{1638312095000000});
 
+    // valid datetime format
+    EXPECT_EQ(dateStringToEpoch("20230531T000000Z"),
+              usSinceEpoch{1685491200000000});
+
+    // valid datetime format
+    EXPECT_EQ(dateStringToEpoch("20230531"), usSinceEpoch{1685491200000000});
+
     // Non zero timezone
     EXPECT_EQ(dateStringToEpoch("2021-11-30T22:41:35.123456+04:00"),
               usSinceEpoch{1638297695123456});
@@ -203,6 +210,12 @@
 
     // invalid timezone
     EXPECT_EQ(dateStringToEpoch("2024-07-01T12:00:00X"), std::nullopt);
+
+    // invalid datetime format
+    EXPECT_EQ(dateStringToEpoch("202305"), std::nullopt);
+
+    // invalid month (13), day (99)
+    EXPECT_EQ(dateStringToEpoch("19991399"), std::nullopt);
 }
 
 } // namespace