GITNUX MARKETDATA REPORT 2024

Birthday Uniqueness Statistics

The birthday uniqueness statistics indicate the likelihood of sharing a birthday with someone else in a given group, based on the classic birthday problem.

Last Updated: June 20, 2024

Written & Summarized by: Jannik Lindner

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In this post, we explore fascinating birthday statistics that shed light on the uniqueness and commonalities of birthdays around the world. From probabilities of shared birthdays in a room to insights on birth distribution by month and day of the week, these statistics offer a glimpse into the diverse and intriguing world of birthdays.

Statistic 1

"The probability that two people have the same birthday in a room of 23 people is about 50%"

Statistic 2

"The probability that at least two people have the same birthday in a room of 75 is 99.9%"

Statistic 3

"Roughly 9% of all birthdays in the world fall in each month"

Statistic 4

"September records the most birthdays in the U.S with over 9% of all birthdays"

Statistic 5

"The most common birthday in the U.S is September 9"

Statistic 6

"The least common birthday in the U.S (not counting leap day) is May 22"

Statistic 7

"12% of all birthdays occur during each season"

Statistic 8

"China has roughly 5 births per second and therefore the highest birthday uniqueness"

Statistic 9

"The day of the week in which the most babies are born is Tuesday"

Statistic 10

"On average, about 800,000 Americans celebrate their birthday on any given day"

Statistic 11

"In a room of 70 people, there's a 99.9% chance at least two people share a birthday"

Statistic 12

"Approximately 205 births occur worldwide per minute"

Statistic 13

"If there are 367 people in a room, there's a 100% chance that at least two people have the same birthday"

Statistic 14

"Less than 0.07% of the world population is born on a leap day"

Statistic 15

"An estimated 16,000 birthdays are expected to be celebrated by Americans turning 100 or older, in 2020"

Statistic 16

"About 4.3 million babies are born in the U.S. every year, meaning roughly 9% of them share the same birthday month"

Statistic 17

"About 11,000 babies are born every day in the U.S."

Statistic 18

"The most unlikely shared birthday (excluding Leap Day) is Christmas day"

Statistic 19

"On average, twins occur in about 32 out of 1,000 births in the US and this can affect the uniqueness of birthdays within a family"

In conclusion, the statistics presented shed light on the fascinating patterns and probabilities surrounding birthdays. From the likelihood of shared birthdays in a room of a certain size to the distribution of birthdays across months and days of the week, the data reveals both common trends and unique outliers. It is intriguing to see how factors such as birth rates in different countries, occurrences of twins, and specific dates like Christmas and Leap Day contribute to the diversity and individuality of birthday celebrations. These statistics offer a glimpse into the complexity and variability of birthdays on a global scale, making each individual’s special day truly unique in its own right.

Jannik Lindner

Jannik is the Co-Founder of Gitnux and has been working in the digital space since 2016. He is specialized in content and tech.

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