New York City is one of the top tourist spots worldwide. With the warm and sunny weather during the summer season, more tourists can be expected. Citibike, with low charges, is a popular transportation method which can be a great choice for tourists to enjoy the outdoor environment while exploring more city culture. Especially, during the weekend, with less traffic, it is expected that there would be more short-term riders (i.e. 24-hour or 3-day users; recorded as customer in User-type). In this Mini-project,  it is assumed that the short-term riders (customers) are tourists. It aims to determine if more short-term users can be anticipated during weekends and the Citibike program can consider further promotions among tourists.