When people refer to Irish twins, its important to recognize that although the siblings are close in age, they are not actually twins. In other words, they were not born during the same gestational period. Calling them Irish twins is just an informal way of classifying siblings that are born close together.

Can siblings have the same birthday?

The simplest model assumes that there are 365 days in a year, each sibling having the same probability of 1/365 of being born on any of those days, and their births are independent. That implies the probability that they have the same birthday is 1/365.

What do you call someone who has the same birthday?

Birthday twins. I have no citation, but have often heard this used to describe exactly what is asked: two or more, not necessarily related, born on the same day, regardless of year born. Other forms of the same construction are astro twins, astrology twins, and star twins.

What are 5 siblings born on the same day called?

A Simple Chart of Multiple Birth TermsNumber of BabiesTerm Used5Quintuplets (quints)6Sextuplets7Septuplets8Octuplets5 more rows

How old is the youngest mother in South Africa?

A nine-year-old from Brakpan, South Africa gave birth by cesarean section to a baby at a hospital 30 miles (48 km) east of Johannesburg. María Eulalia Allende, from a village in northern Córdoba Province, gave birth to a boy weighing 7 lb (3.2 kg) at a hospital in the city of Córdoba.

What is the most identical birth?

Very high-order multiple births In 1997, the McCaughey septuplets, born in Des Moines, Iowa, became the first septuplets known to survive infancy. Multiple births of as many as eight babies have been born alive, the first surviving set on record goes to the Suleman octuplets, born in 2009 in Bellflower, California.