Just like birthdays, the odds are good you will have two die on the same day. In my high school home class of about 50 we had 3 on my birthday. All same year, and same hospital. And there was at least one more in my class as he was born in the same hospital. I will admit that 3 out of the first 7 to die on July 4 is high, but not improbable. Interesting idea. Now if I can get my stocks in proper order like that.
Maybe that statistic is on the Web. I'll check.