From de487af1ff7f2bacd83b70d50b649d8408ef886b Mon Sep 17 00:00:00 2001
From: KWON <thexero@gmail.com>
Date: Wed, 9 Jul 2025 17:35:46 +0900
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---
 lib/weekly_visitor_forecast.py | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/lib/weekly_visitor_forecast.py b/lib/weekly_visitor_forecast.py
index 1a3d3dd..0d40132 100644
--- a/lib/weekly_visitor_forecast.py
+++ b/lib/weekly_visitor_forecast.py
@@ -35,7 +35,34 @@ def get_this_week_dates(today=None):
 
 
 def get_last_year_same_weekdays(dates):
-    return [d.replace(year=d.year - 1) for d in dates]
+    """
+    작년의 동일한 요일을 가진 날짜를 반환
+    (예: 2025-07-08(화) → 2024년 중 가장 가까운 화요일)
+
+    Args:
+        dates (list of datetime.date): 기준 날짜 리스트
+
+    Returns:
+        list of datetime.date: 작년의 동일 요일 날짜 리스트
+    """
+    result = []
+    for d in dates:
+        target_weekday = d.weekday()
+        last_year_date = d - timedelta(days=365)
+
+        # 동일 요일 찾기: 주중 1주 범위 내에서 동일 요일 탐색
+        delta = 0
+        found = None
+        for offset in range(-3, 4):
+            candidate = last_year_date + timedelta(days=offset)
+            if candidate.weekday() == target_weekday:
+                found = candidate
+                break
+        if found:
+            result.append(found)
+        else:
+            result.append(last_year_date)  # fallback
+    return result
 
 
 def pm25_grade(value):