Celebrity Parents Calif. Twins Born in Different Years 15 Minutes Apart — Brother in 2021 and Sister in 2022 "It's crazy to me that they are twins and have different birthdays," mother Fatima Madrigal said of her fraternal twins Alfredo and Aylin By Nicholas Rice Nicholas Rice Instagram Twitter Nicholas Rice is an Associate Editor for PEOPLE Magazine. He began working with the brand as an Editorial Intern in early 2020, before later transitioning to a freelance role, and then staff positions soon after. Nicholas writes and edits anywhere between 7 to 9 stories per day on average for PEOPLE, spanning across each vertical the brand covers. Nicholas has previous work experience with Billboard, POPSUGAR, Bustle and Elite Daily. When not working, Nicholas can be found playing with his 5 dogs, listening to pop music or eating mozzarella sticks. People Editorial Guidelines Published on January 2, 2022 01:38 PM Share Tweet Pin Email Photo: Natividad Medical Center A set of California twins just celebrated their births on different days, months, and years thanks to a rare occurrence. On Friday evening, parents Fatima Madrigal and Robert Trujillo of Greenfield welcomed a son named Alfredo into the world on New Year's Eve at 11:45 p.m. local time. Just 15 minutes later, right when the clock struck midnight, the couple welcomed Alfredo's twin sister, named Aylin, on New Year's Day. Aylin was welcomed into the world at 5 lbs., 14 oz., while big brother Alfredo weighed 6 lbs., 1 oz. Tia Mowry Says She and Sister Tamera Have 'Twintuition': 'We Call Each Other Womb-Mates' In a press release from the Natividad Medical Center obtained by PEOPLE, Madrigal explained her feelings behind her newborn kids' unique birthdays. Natividad Medical Center "It's crazy to me that they are twins and have different birthdays," she said. "I was surprised and happy that she arrived at midnight." Dr. Ana Abril Arias, a family doctor at the Natividad Medical Group, added, "This was definitely one of the most memorable deliveries of my career." Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday. "It was an absolute pleasure to help these little ones arrive here safely in 2021 and 2022," she said. "What an amazing way to start the New Year!" RELATED VIDEO: This Michigan Family Is Fighting to Adopt Their Own Twins, Born via Surrogate: 'They're Trying to Tear Us Apart' According to the Centers for Disease Control and Prevention (CDC), there are typically 120,000 twin births every year in the United States. The births make up just over 3 percent of all births, the organization states. Alfredo and Aylin now join three older siblings — two girls and a boy. Madrigal said her oldest son is thrilled to have a brother, and the rest of their family is excited to meet the new additions.