Which month were most serial killers were born in?

Interestingly enough, most of the serial killers that we know of were born during the month of November.

After that, the second most common month is April. At the other end of the scale, the least common month for a serial killer to be born is September.

How do we know this?

In a previous article, we mentioned how we had compiled a list of 179 of the worst serial killers from over thirty different countries. This list includes information such as their nationality and their date of birth.

Using this data, we were able to compile a number of interesting statistics. For example, we found that most serial killers were born in the 1940s and 1950s. We also determined which were the most common star signs for serial killers.

Furthermore, we were also able to calculate the following pieces of data:

  • The month that most serial killers were born in.
  • The day of the week that most serial killers were born on.

Let’s start by taking a look at the month data!

The most common months for serial killers to be born in.

Out of the 179 people on our list, the breakdown was as follows:

  1. November: 26 serial killers. In percentage terms, that is 14.53%.
  2. April: 19.
  3. January: 18.
  4. Both July and December had 17.
  5. February: 16.
  6. March: 14.
  7. May and August both had 13 serial killers.
  8. October and June both had 9.
  9. Finally, September only had 8, which is 4.47%.

If we limit it to American serial killers, of which there are 69, then the results look like this:

  1. Firstly, we have November, which had 10 American serial killers. That is 14.49%. An eerily-similar percentage to the one shown above.
  2. March: 8.
  3. May and August: 8.
  4. January and December: 6.
  5. June and July both had 5.
  6. February and April had 4.
  7. October only had 3.
  8. Finally, September had 1, which is 1.45%.

The interesting thing about the results above is that both November and September retained the same positions. However, April dropped by a good few places and March jumped up into second place.

Do these statistics mean anything?

Frankly, I don’t think so. There are many factors behind what drives a serial killer to kill. However, a person’s birth month probably isn’t one of them.

Sometimes, statistics don’t really mean anything. In certain cases, the numbers are due to “luck” or “chance”. They just fall where they fall. There is no rhyme or reason.

If we were to reset time and watch it all unfold again, these numbers would probably be much different.

For example, I just tossed a coin ten times. Now, probability states that there is a 50/50 chance that it will land on either side. However, in my case, the coin landed on heads 8/10 times.

Does this mean that the coin is more likely to land on heads? Of course not. That’s just how it fell during those ten tosses. If I were to do it all over again, the results could be completely reversed.

Basically, what I’m saying is this: It’s not that deep.

Which day of the week were most serial killers born on?

Our study calculated that Tuesday was the most common day for a serial killer to be born on. Here are the full results:

  1. Tuesday: 31 serial killers – 17.32%
  2. Monday and Saturday both had 29.
  3. Wednesday had 26.
  4. Friday had 24.
  5. Finally, Thursday and Sunday were the lowest, with 20.

When we limited the list to American serial killers, the results were as follows:

  1. Tuesday still took the top spot with 14.
  2. Monday had 12.
  3. Wednesday had 11.
  4. Sunday had 10.
  5. Saturday had 9.
  6. Thursday had 8.
  7. Finally, Friday came in last at 5.

As you can see, Tuesday came out on top of both lists. However, Friday dropped to last once we limited the list to US-based serial killers.

Does all of this mean that people who are born on a Tuesday in November are more likely to become serial killers? Of course not. As we pointed out above, these statistics are not to be taken too seriously. This was merely a fun exercise. Nothing more.