Does the lunar cycle affect behavior in animals? Of course not. But, to appease my astrology believer audience, let's compare crimes in San Francisco with the phases of the moon! The plot below counts every crime during the new or full moon in San Francisco for the year 2014 between the hours of 9pm and 5am:
Well, this certainly makes sense. If I'm a dude about to commit a crime, I would wait until it's really dark out - that's like day one of ninja school.