ribit>>> ...attacks were also simultaneous uncoordinated coincidences.
True, actually.
Almost any other day of the year, not.
Exceptions to 'any other day': NewYearsDay/Eve, Easter, July4, Thanksgiving, Christmas, 9-11, 7 Dec, election day and a couple of others - days on which 'loners' are likely to select at random, without coordination.
Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...