Having stumbled upon these data - https://rviews.rstudio.com/2018/06/14/player-data-for-the-2018-fifa-world-cup/ - highlighting how people born in the first months of the year are much more likely to be professional footballer, I decided to run some tests on politicians... here's the result for all parliamentarians of Italy's republican history (almost 8000 in total). January Vs December shows a big difference. https://social.giorgiocomai.eu/attachment/26764