Are More Babies Born on Nights of the Full Moon?

Just for fun, I analyzed a dataset consisting of birthdays of people who applied for a Federal Communications Commission license for much of the 20th Century. I compared the number of births on each day with the phase of the moon on that day. With 94 years of data, 34,661 days, I can definitely say that there is utterly & completely no correlation between the phase of the moon and the number of births on a given day. The urban legend that more babies are born on the day of a full moon is complete hogwash. The image here is just a screen shot of a tiny portion of the spreadsheet illustrating this absence of correlation.

Microsoft Excel implements the correlation function of Karl Pearson. This formula produces a metric between -1 and +1. A +1 correlation indicates that one set of data are directly correlated to the other. A -1 metric indicates that one set of data are inversely corrrelated. A metric of zero means that one set of data has nothing to do with the values of the other set of data. The correlation of birth dates to the phase of the moon results in a metric of -0.001777599. That is to say that there is zero correlation between the two data sets out to two decimal points. So, yeah, absolutely no correlation.