diff --git a/src/main/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverter.java b/src/main/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverter.java
index 7504dd65..d75ee8c3 100644
--- a/src/main/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverter.java
+++ b/src/main/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverter.java
@@ -15,12 +15,17 @@ public class StringToDateTimeConverter {
 
     private static final DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withLocale(Locale.KOREA);
     private static final DateTimeFormatter dateTimeTFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSSSS").withLocale(Locale.KOREA);
+    private static final int MAX_DATE_TIME_LENGTH = 26;
 
     public static LocalDateTime convert(String dateTime) {
         if (dateTime == null || dateTime.isBlank()) {
             throw new IllegalArgumentException("Invalid date time format: " + dateTime);
         }
 
+        if (dateTime.length() > MAX_DATE_TIME_LENGTH) {
+            dateTime = dateTime.substring(0, MAX_DATE_TIME_LENGTH);
+        }
+
         if (isDateTime(dateTime)) {
             return LocalDateTime.parse(dateTime, dateTimeFormatter);
         }
diff --git a/src/test/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverterTest.java b/src/test/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverterTest.java
index 3edc0229..ae9e1671 100644
--- a/src/test/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverterTest.java
+++ b/src/test/java/com/kustacks/kuring/common/utils/converter/StringToDateTimeConverterTest.java
@@ -42,7 +42,9 @@ void date_time_convert_fail(String dateTime) {
     private static Stream<Arguments> stringLocalDateInputProvider() {
         return Stream.of(
                 Arguments.of("2023-04-03 00:00:12", LocalDateTime.of(2023, 4, 3, 0, 0, 12)),
-                Arguments.of("2024-08-03T20:01:27.454996", LocalDateTime.of(2024, 8, 3, 20, 1, 27))
+                Arguments.of("2024-08-03T20:01:27.454996", LocalDateTime.of(2024, 8, 3, 20, 1, 27)),
+                Arguments.of("2024-08-04T21:57:23.1166969", LocalDateTime.of(2024, 8, 4, 21, 57, 23)),
+                Arguments.of("2024-08-04T21:57:23.116696917", LocalDateTime.of(2024, 8, 4, 21, 57, 23))
         );
     }
 }