구조적인 부분 수정

backend/app/api/endpoints/journals.py

@@ -8,9 +8,16 @@ from fastapi import APIRouter, Depends, Query
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select, desc
 from typing import Optional
-from datetime import datetime
+from datetime import datetime, timezone
 import logging
 
+
+def _utc_iso(dt: datetime | None) -> str | None:
+    """UTC naive datetime → ISO 8601 with +00:00 (JS가 UTC로 올바르게 파싱)"""
+    if dt is None:
+        return None
+    return dt.replace(tzinfo=timezone.utc).isoformat()
+
 from app.core.database import get_db
 from app.models.models import TradeJournal
 
@@ -42,12 +49,12 @@ async def list_journals(
                 "trade_id": j.trade_id,
                 "stock_code": j.stock_code,
                 "stock_name": j.stock_name,
-                "journal_date": j.journal_date.isoformat() if j.journal_date else None,
+                "journal_date": _utc_iso(j.journal_date) if j.journal_date else None,
                 "content": j.content,
                 "strategy_name": j.strategy_name,
                 "mood": j.mood,
                 "tags": j.tags,
-                "created_at": j.created_at.isoformat() if j.created_at else None,
+                "created_at": _utc_iso(j.created_at),
             }
             for j in journals
         ]