diff --git a/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/domain/Comment.java b/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/domain/Comment.java
index eec337b..1159a05 100644
--- a/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/domain/Comment.java
+++ b/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/domain/Comment.java
@@ -21,7 +21,7 @@ public class Comment extends BaseEntity {
     private String content;
 
     @Column(nullable = false)
-    private LocalDateTime date = LocalDateTime.now();
+    private LocalDateTime date;
 
     //외래키 이름은 postId로 저장되도록 함.
     @ManyToOne(fetch = FetchType.LAZY)
diff --git a/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/CommentService/CommentServiceImpl.java b/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/CommentService/CommentServiceImpl.java
index 98a0bc3..d9da71f 100644
--- a/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/CommentService/CommentServiceImpl.java
+++ b/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/CommentService/CommentServiceImpl.java
@@ -12,7 +12,6 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.time.LocalDate;
 import java.time.LocalDateTime;
 
 @Service
@@ -29,6 +28,7 @@ public Comment addComment(Member member, long postId, String content) {
                 .content(content)
                 .post(post)
                 .member(member)
+                .date(LocalDateTime.now())
                 .build();
         commentRepository.save(newComment);
         return newComment;
diff --git a/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/MemberService/MemberServiceImpl.java b/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/MemberService/MemberServiceImpl.java
index f928196..ce269e5 100644
--- a/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/MemberService/MemberServiceImpl.java
+++ b/Midnight-Snacker/src/main/java/com/example/Midnight/Snacker/service/MemberService/MemberServiceImpl.java
@@ -106,12 +106,12 @@ public MemberResponseDTO.MyPageResponse getMyPageInfo(Member member) {
 
         LocalDateTime now = LocalDateTime.now();
 
-        LocalDateTime firstDayOfMonth = now.withDayOfMonth(1);
-        LocalDateTime lastDayOfMonth = now;
+        LocalDateTime startOfMonth = now.withDayOfMonth(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
+        LocalDateTime endOfMonth = now.withHour(23).withMinute(59).withSecond(59).withNano(999999999);
 
-        int blackCount = calendarRepository.countByMemberAndColorAndDateBetween(member, Color.BLACK, firstDayOfMonth, lastDayOfMonth);
+        int blackCount = calendarRepository.countByMemberAndColorAndDateBetween(member, Color.BLACK, startOfMonth, endOfMonth);
 
-        int totalCount = calendarRepository.countByMemberAndDateBetween(member, firstDayOfMonth, lastDayOfMonth);
+        int totalCount = calendarRepository.countByMemberAndDateBetween(member, startOfMonth, endOfMonth);
 
         float rating = totalCount == 0 ? 0 : ((float) blackCount / totalCount) * 100;