If I arrived late at Xi'an North Station, am i eligible to get on the free shuttle bus next day?

I will be arriving from HuaShan North Station with the G ticket. I plan to overnight near North Railway Station. Next day, I would like to visit Terracotta Army Museum. I know that I need to buy the Museum ticket the next day also, can I get on the free shuttle bus at 8am? If not are there other buses at that station that I can use?