【2021-09-30】

City Journal: Concentrating on Crime Third and finally, crime is concentrated in time. It is predictable by hours, days of the week, and season. The small percentage of chronic offenders who generate the majority of serious crime and violence aren’t actively committing crime all day, every day. Instead, the criminal activity in crime hot spots and among chronic offenders tends to occur at night, during the weekends (Thursday night through early Sunday morning), and in the summer. In Philadelphia, for example, robberies and murder peak during the evenings between 10:00 P.M. and 1:00 A.M. The weekends are obvious triggers for violent crime, as there are simply more potential offenders and victims on the streets. And summer is the most dangerous time of year in most of the United States. 暴力犯罪的时间分布也些规律，日内，晚10点到凌晨1点是高峰，周内，周四晚到周一早晨是高峰，年内，夏季是高峰，

我感觉这似乎这跟娱乐场所的营业高峰大略一致，