New York is all the way to the east of its timezone, which may explain why it starts "late". There are two effects at play here. 1)the official time, which affe

New York is all the way to the east of its timezone, which may explain why it starts "late". There are two effects at play here. 1)the official time, which affects hours of operations for businesses 2)the mean solar time, which affects sleeping cycles What you'd want is to predict starting time as a function of the difference between these variables and then rank the cities by their residuals.