Dear K. Wuttiphong,
MGO is calculating the ship date/time based on the available deliveries and the transit time/transit code on that route. The ship/delivery you are indicating is scheduled to arrive Tuesday 8th at 10:10 (window 9:30-10:10). From that delivery the system subtracts the transit time and the duration of the ship window which results in 4:20am. As Monday (holiday) and Sunday is not counted the shipment is shown as Saturday 5.Dec 4:20 which is valid in the ship calendar.