What is the earliest bus from Guangzhou Hotel to Baiyun International Airport

Hello,

May I check with you what is the earliest bus timing from LNHotel/ Bin Guan (Add: 2 Qiyi Road) to Baiyun International Airport on a weekend and weekday?

My flight is at 10.40am in the morning, so I would like to know the earliest bus timing so that I can reach the airport 2 hours prior to my departure time.

Thanks!