Can i know what time is the latest for the bus service at Baiyun airport?

Hi, actually the airport shuttle bus line 6 to Tianhe Terminal of Guangzhou Airport (CITIC Plaza), close to Guanghzou East Railway Station operates from 06:30 to the arrival of the last flight. Besides, the airport shuttle bus line 1 to CAAC Ticket Office (near to Guangzhou Railway Station) operates from 07:00 to the arrival of the last flight. Therefore, as you getting out of the airport, you can take the buses.