处理时间差，统一UTC时间

ccxt/async_support/mt5.py

@@ -156,6 +156,10 @@ class mt5(Exchange, ImplicitAPI):
         response = await self.private_get_connect(request)
         
         self.token = response
+        self.diff_milliseconds = 0  # 重置时间差
+        
+        # 获取服务器时区
+        await self.server_timezone()
         return self.token
 
     async def check_connect(self):
@@ -367,6 +371,7 @@ class mt5(Exchange, ImplicitAPI):
             }
             response = await self.private_get_servertimezone(request)
             self.timezone = int(float(response))
+            self.diff_milliseconds = self.timezone * 3600 * 1000
             return self.timezone
     
     async def fetch_balance(self, params={}):
@@ -567,7 +572,7 @@ class mt5(Exchange, ImplicitAPI):
         """异步获取持仓信息"""
         if not hasattr(self, 'token') or not self.token:
             await self.get_token()
-            
+        await self.server_timezone()
         request = {
             'id': self.token,
         }
@@ -602,8 +607,8 @@ class mt5(Exchange, ImplicitAPI):
         close_lots = self.safe_number(position, 'closeLots', 0)
         
         # 解析时间戳
-        timestamp = self.parse8601(self.safe_string(position, 'openTime'))
-        open_timestamp_utc = self.safe_integer(position, 'openTimestampUTC')
+        timestamp = self.parse8601(self.safe_string(position, 'openTime')) - self.diff_milliseconds
+        open_timestamp_utc = self.safe_integer(position, 'openTimestampUTC') - self.diff_milliseconds
         if open_timestamp_utc:
             timestamp = open_timestamp_utc
         
@@ -692,10 +697,12 @@ class mt5(Exchange, ImplicitAPI):
         """异步获取未平仓订单 - 修复版本"""
         if not hasattr(self, 'token') or not self.token:
             await self.get_token()
-            
+        
         request = {
             'id': self.token,
         }
+
+        await self.server_timezone()
         
         response = await self.private_get_openedorders(self.extend(request, params))
         
@@ -714,7 +721,9 @@ class mt5(Exchange, ImplicitAPI):
         """异步获取已平仓订单 - 修复版本"""
         if not hasattr(self, 'token') or not self.token:
             await self.get_token()
-        
+
+        await self.server_timezone()
+
         if params.get('from') is None or params.get('to') is None:
             yesterday = datetime.now() - timedelta(days=3)
             params['from'] = yesterday.strftime('%Y-%m-%d') + 'T00:00:00'
@@ -764,8 +773,8 @@ class mt5(Exchange, ImplicitAPI):
                     # 如果无法解析，使用原始 market_id
                     symbol = market_id
             
-            timestamp = self.parse8601(self.safe_string(order, 'openTime'))
-            last_trade_timestamp = self.parse8601(self.safe_string(order, 'closeTime'))
+            timestamp = self.parse8601(self.safe_string(order, 'openTime')) - self.diff_milliseconds
+            last_trade_timestamp = self.parse8601(self.safe_string(order, 'closeTime')) - self.diff_milliseconds
             if last_trade_timestamp is None:
                 last_trade_timestamp = timestamp