Merge pull request #744 from roeseth/fix-local-timezone

Use system local time zone instead of hardcoded UTC+8

packages/astrbot/main.py

@@ -1091,9 +1091,9 @@ UID: {user_id} 此 ID 可用于设置管理员。/op <UID> 授权管理员, /deo
             req.prompt = user_info + req.prompt
 
         if self.enable_datetime:
-            tz_offset = datetime.timedelta(hours=8)
-            tz = datetime.timezone(tz_offset)
-            current_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M")
+            current_time = (
+                datetime.datetime.now().astimezone().strftime("%Y-%m-%d %H:%M")
+            )
             req.system_prompt += f"\nCurrent datetime: {current_time}\n"
 
         if req.conversation: