NoBenford's law talks about likelihoods of each possible first digit. The columns in the graph are not based on first digit. The '12 hour' column contains times between 12 and 24 hours, most of which start with 1 or 2, so Benford's law predicts that there should be a peak here.
It's probably just a coincidence.
(It's probably just a coincidence.
rhebus ac201fd270c3b96beab24f2829780ab2,
Wed 9 Jun 2010, 8:45,
archived)