Delano Regional Medical Center told reporters than a brother and sister were born in 2017 and 2018 respectively.
The first twin, a boy, was born at 11:58 p.m. Sunday; he weighed 5 pounds 9 ounces, and was 18 inches, hospital officials told the station.
The twins' mother, Maria Esperanza Flores Rios, had a due date of January 27 but was scheduled for a C-section January 10 due to her high-risk pregnancy.
The first baby born in Kern County in 2018 was in Delano.
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A twist of fate meant that both of them arrived in the world 20 minutes apart but in different years.
A California mother celebrated the new year by welcoming twins: one in 2017, one in 2018. Aitana de Jesus was born at 12:16 a.m. While the duo will share everything for life including genes, their date as well as year of birth will remain different. Her original due date was scheduled for January 27. "The whole family feels humbled and blessed and excited", the spokesman shared.
The twins actually weren't due for another three weeks.
It was therefore quite a shock when she went into labour on New Year's Eve.
A California mother is celebrating a rare gift: The birth of her twins in two different years.