I am not sure if I understand what you want!
but maybe if I am correct you want to know an order open time. so, see below might be useful with you
Returns open time of the currently selected order.
Open time of the currently selected order.
The order must be previously selected by the OrderSelect() function.
if(OrderSelect(10, SELECT_BY_POS)==true) Print("open time for the order 10 ",OrderOpenTime()); else Print("OrderSelect returned error of ",GetLastError());