He said the chance of two people being born on the same day and having a baby on their birthday is about 1/365 times 1/365. “That comes out to . 0000000751 -- seven zeros and then 751,” or about 7.5 in a million, he said, which comes to about one in 133,000.
The random odds against five single siblings sharing a birthdate are one in 17,797,577,730 - almost 4 times the world's population.
Calling them Irish twins is just an informal way of classifying siblings that are born close together. Twins are two children born from the same conception, carried during the same pregnancy, and born together, either on the same day or a day or so apart.
The chance that the third is born on that day as well is 1/365, and assuming that there is no common factor linking those birthdates then the total chance of the three birthdays coinciding is 1/ (365 x 365 ) = 1 in 133000, or 7.5 in 1,000,000. This is quite small.
Show activity on this post. What is the probability of two people being born on the same day of the week? I understand both of them individually have probability of 1/7 to be born on a certain day and that the two probabilities are independent of one another. So the answer could be 1/49.
According to data collected by the Centers for Disease Control and Prevention (CDC) and the Social Security Administration (SSA), the rarest month to be born in is February, making Aquarius the rarest zodiac sign. This makes logical sense, since February is the shortest month of the year, even with a leap year.
The rarest birthday of the 365 annual calendar days is Christmas day, Dec. 25. If your birthday is New Year's Day or Christmas Eve, you also have uncommon birthdays. Jan. 1 and Dec. 24 are just below Christmas on the list.
Septuplets (7)
The McCaughey septuplets (born 19 November 1997, in Des Moines, Iowa) are the world's first surviving set of septuplets.
It's technically possible for two siblings to be as close as 9 or 10 months apart. After your pregnancy comes to an end, you'll start ovulating again before you have your first postpartum period.
The term “Irish twins” refers to siblings who are born within 12 months of one another. This is especially true for children born in the same calendar year, or children who would be in the same grade of school. However, children born within 18 months of one another are still often referred to as Irish Twins.
Nine to 10 months age gap is obviously the smallest gap you can have, and can be quite tough but rewarding at the same time. The children are so close in age they will learn a lot about the world together.
For most women, it's best to wait at least 18 months between giving birth and getting pregnant again. This means your baby will be at least 1½ years old before you get pregnant with another baby. This much time gives your body time to fully recover from your last pregnancy before it's ready for your next pregnancy.
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.
For the most part, twins and multiples share the same birthday. However, depending on the time of day the babies are born and how long the timespan is between each baby's birth, twins can be born on different days.
When Sadie Budden spent two years struggling to conceive she thought she might never have children. But then, to everyone's surprise, she gave birth to two – in the space of just six-and-a-half months. Against all the odds, Ronnie and his little sister Sienna were born only 208 days apart.
The Dutch Twins are Kit and Kat, 5 years old and not yet big enough to be called by their real names, Christopher and Katrina. They live in a typical Dutch household, around the turn of the last century. The book follows their day-to-day adventures and accidental mishaps.
A gap of 3 years or more greatly reduces the chances of sibling rivalry. By this time the older child is secure in him or herself and quite independent. In addition, the mother's body is fully recovered from the challenges of pregnancy and birth of the first child.
If the 12 – called duodecaplets – are all born alive they would represent a medical miracle and break the record of American mother Nadya Suleman, who recently gave birth to the world's longest-surviving octuplets.
Women can reproduce for about half of their lifetime and can only give birth about once every year or so. So it makes sense that women can only have a fraction as many children as men. One study estimated a woman can have around 15 pregnancies in a lifetime.
February 3rd is the only day where no one in history has ever been born. Despite much scientific study, there is no explanation for this phenomena. Historically it has been referred to as “the empty day” or “nobody's birthday”.
Those that are born in July are either a Cancer or Leo. Cancer birthdays fall between June 21 – July 22, while Leo birthdays fall between July 23 – August 22. Cancer babies are often known for being caring, protective and empathetic.
New research has found that 16 December is officially the worst day of the year to have a birthday. It also found that 27% of December-born folk receive their birthday gifts wrapped in Christmas paper.