Thirty minutes. According to Huasheng Online, the bus line of Ningxiang 809 is from 8: 30 to 2 1: 30, and the bus line of Ningxiang 809 runs every 30 minutes. Ningxiang City is a county-level city under the jurisdiction of Hunan Province and is managed by Changsha City. It is located in the south edge of Dongting Lake in the northeast of Hunan Province and in the west of Changsha City. Ningxiang is a continental monsoon humid climate with four distinct seasons, short cold period and long hot period.