8:00 am. According to the official business hours released by Dawukou StarHub Group, it is known that the working hours of Dawukou StarHub Group Hall is 8:00 am. Dawukou District, belonging to Shizuishan City of Ningxia Hui Autonomous Region, lies between 106°05′-106°30′ east longitude and 38°17′-38°51′ north latitude.