Intend to go to Xitang from Shanghai.

Understand that there are Special Travel Bus Line: In Shanghai, you can wait in the Travel Collecting and Distributing Center of Shanghai (address: under the No. 5 escalator of Shanghai Stadium (waiting hall of traveling route)). Here the bus will deliver at 08:35 am (every day, including the guide service) and return at 16:30 pm or it will deliver at 09:00 am (only weekend, excluding the guide service) and return at 16:00 pm.

But, I intend to stay 1 night in Xitang. Any idea whether is it possible for me to take the Special Travel Bus on weekday from Shanghai Stadium to Xitang but only return on the next day say before noon? What is the frequency / Time schedule of Special Travel Bus from Xitang back to Shanghai?