The two sets of twins born in different years: Parents welcome new arrivals as the nation greets 2012

They are set to share many experiences over their lives - but a birthday won't be one of them.

Two sets of twins were born as the nation welcomed in 2012 - with one twin delivered before the clock struck 12, while another was born afterwards.

At the Women & Children's Hospital in Buffalo, New York, Ronan Rosputni was delivered at 11.37pm on December 31 2011, and his younger brother Rory arrived at 12.10am on January 1 2012.

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Welcome: Brighid and Thomas Rosputni with their two sons, Ronan Stephen, left, and Rory Stephen, born  33 minutes apart - on different days in different years

Welcome: In New York, Brighid and Thomas Rosputni stand with their twin sons Ronan Stephen, left, and Rory Stephen, born on different days in different years

New arrivals: Darryl Humenny and Stephanie Peterson hold their twin babies Beckett, left, and Freya in Minneapolis, Minnesota, where the twins were born six hours apart

Joy: Darryl Humenny and Stephanie Peterson hold their twin babies Beckett, left, and Freya in Minneapolis, Minnesota, where the twins were born six hours apart

In Minneapolis, Minnesota, Stephanie Peterson gave birth to son Beckett at 6.40 p.m. on New Year’s Eve and, six hours later, delivered his twin sister Freya - at 12.26 a.m. on New Year’s Day.

Beckett weighed 4 pounds, 11 ounces, while his sister weighed 5 pounds, 2.5 ounces.

'It was a great day to have a baby because everybody was in such a celebratory mood anyway,' their mother Stephanie, who had been given a February die date, told CBS News.

'When Freya was finally born the nurses had made confetti and threw confetti all over and everybody was clapping, so it was a party when she came.'

Snap! Darryl Humenny and Stephanie Peterson hold their twin babies, Beckett and Freya, who were also born before and after midnight in the in Hennepin County Medical Centre, Minneapolis

New arrivals: Beckett and Freya both measured 18 inches long at birth

In the New York births, Rory weighed in at 6 pounds and 15 ounces, an ounce heavier than his older brother - the boys share the same middle name, Stephen and arrived a few weeks earlier than expected.

'This is like a dream,' said Brighid Rosputni, mother of the twins, who had trouble wrapping her mind around the quirkiness of the births.

'This is like a dream. They have completely different birth dates and years. I don't know if it's ever happened'

Mother Brighid Rosputni

'They have completely different birthdates and years,' Rosputni said. 'I don't know if it's ever happened. I'll have to do some research.'

Ronan was the last baby born in 2011 at the hospital -- and quite possibly in all of Western New York, although hospital officials couldn't confirm that Sunday.

The boys appear to be fraternal, not identical, twins: Ronan has auburn hair like his beaming mom, while Rory has darker hair like his proud dad, Thomas.

While twins sometimes are born on different days, personnel at Women & Children's Hospital couldn't recall another twin birth in different years.

Hi son: Beckett Humenny weighed 4 pounds, 11 ounces

Hi son! Baby Beckett Humenny and his sister were born two months early

Sister: Freya weighed 5 pounds, 2.5 ounces

Newborn: Freya weighed 5 pounds, 2.5 ounces - heavier than her older brother

Kathy Bean, a charge nurse, said: 'It's unique, they definitely will have a story for the rest of their lives.'

And the story of their birth was rather dramatic.

Mother Brighid Rosputni's water broke Saturday morning almost foiling her participation in her sister's wedding.

But the 30-year-old was undeterred, she said: 'All I wanted to do was see my sister walk down the aisle.

'We were dressed for a wedding. We made it to the church and sent our four kids to the reception and then came here.'

Surprise: Brighid Rosputni of Buffalo, New York was on her way to her sister's wedding when her waters broke. She was able to watch the nuptials before welcoming her sons

Surprise! Brighid Rosputni of New York was on her way to her sister's wedding when her waters broke. She was able to watch the nuptials before giving birth

On top of that, their delivery was a little more complicated than usual.

Both babies came out feet first, known as breech birth.

But Brighid credited midwife Eileen Stewart with helping her get through the complications without any painkillers or labor-inducing drugs.

Now the family have to work out how to organise birthday celebrations for the brothers.

The Rosputni's have already proposed one birthday party for the twins on the same day in the same year.

They will be welcomed at home by their already large family comprised one sister, Ava, 6, and three brothers, Owen, 5, Eamon, 4, and Afton, 2.

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