There is a date that stands out on the world calendar for gathering an unavoidably high birthday of birthdays. This is not an isolated coincidence, but a trend confirmed by international studies.
Investigations of the United Nations (UN), cited by the Meteored News Portal, have identified that there is a specific day in which more people are born around the world, surpassing any other date of the year.
The month that concentrates the most birthdays
According to the same source, September is the month where the largest number of births are recorded. Within this period, the 9th is what is most often repeated as a anniversary date, closely followed by the 12th and 19th. Writes the site that the explanation is associated with the conception calendar: considering an average pregnancy of 40 weeks, counting up to December, Christmas and New Year, seasons marked by celebrations and family meetings.
It adds the publication that December is also the month in which a conception peak of 9.1%is recorded, coinciding with the most chosen time for engages and weddings.
This pattern is reinforced by the so -called anniversary paradox, according to which, in a group of only 23 people, there is a 50% probability of at least two sharing the same day of birth.
Changes over the decades
Still, not always September led the statistics. In the 1970s and 1980s, for example, data from the National Institute of Statistics indicated May as the month with more births in Portugal. According to the same source, the trend has only been consolidated in recent decades, coinciding with the analysis of several countries.
According to the Meteored Portal, on September 9, several international public figures were born. These include singer Michael Bublé and actors Hugh Grant, Michelle Williams, Adam Sandler and Henry Thomas, known for the role in “ET – The Extraterrestrial.” This concentration reinforces the perception that the day is especially common in the birthday calendar.
Adds the publication that February, particularly the 29th, is the rarest date of birth, because it only occurs every four years. It refers to the same source that other unusual dates are December 24 and 31, Christmas Eve and New Year, respectively, periods when the birth rate goes down more than 15%.
A recurring conclusion
Generally speaking, December is a month more associated with conception than to birth. Already September became at the highlight of the birthdays statistics, repeating as a reference in different countries and cultural contexts.
According to the site, this reality helps to understand why so many birthdays are concentrated in the same period of the year, making September 9 on the most common date to blow candles.
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