Add

main.py

@@ -1,5 +1,5 @@
 import os
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from fastapi import FastAPI
 from pymongo import MongoClient
 
@@ -11,6 +11,10 @@ client = MongoClient(MONGO_URI)
 db = client["myAppDB"]
 collection = db["Training_Response"]
 
+# ===== Timezone config =====
+UTC = timezone.utc
+VN_TZ = timezone(timedelta(hours=7))
+
 @app.get("/")
 def home():
     return {"status": "running"}
@@ -18,16 +22,23 @@ def home():
 @app.get("/daily-count")
 def daily_count():
 
-    now = datetime.now()
-    start_of_day = datetime(now.year, now.month, now.day)
-    end_of_day = start_of_day + timedelta(days=1)
+    # Giờ Việt Nam
+    now_vn = datetime.now(VN_TZ)
+
+    # Đầu ngày & cuối ngày theo giờ VN
+    start_vn = datetime(now_vn.year, now_vn.month, now_vn.day, tzinfo=VN_TZ)
+    end_vn = start_vn + timedelta(days=1)
+
+    # Convert sang UTC để query MongoDB
+    start_utc = start_vn.astimezone(UTC)
+    end_utc = end_vn.astimezone(UTC)
 
     pipeline = [
         {
             "$match": {
                 "createdAt": {
-                    "$gte": start_of_day,
-                    "$lt": end_of_day
+                    "$gte": start_utc,
+                    "$lt": end_utc
                 }
             }
         },
@@ -42,6 +53,6 @@ def daily_count():
     results = list(collection.aggregate(pipeline))
 
     return {
-        "date": now.strftime("%d/%m/%Y"),
+        "date": now_vn.strftime("%d/%m/%Y"),  # hiển thị đúng giờ VN
         "counts": results
     }