Three sets of twins were born at the Ulster Hospital Maternity Unit on the day the NHS celebrated its 75th birthday.
The hospital described as “incredible” the birth of the twins in just over 13 hours from midnight on Wednesday.
Two boys were born to mum Danielle Kelly at 12:02am. Danielle said: “I might be biased, but my boys have been absolutely brilliant and so have the staff!”
They were followed at 11.27 am by a boy and a girl born to Charlene Morrison. Names have not yet been decided. Charlene praised staff, describing them as "absolutely amazing".
Freya and Hallie Garvey entered the world at 13:14 pm, leading to mum Sherlyen saying she was "beyond delighted at the birth of my beautiful baby girls".
"The staff have been incredible and I can’t believe that so many other twins have been born at the Ulster Hospital today too, on the 75th birthday of the NHS," she added.
Midwife Jenni Martin described how unusual it is for four twins to be born on the same day in the Maternity Unit.
“It’s been a hectic but brilliant day! I feel very proud of our NHS. Although our staff have worked extremely hard today, as always, there has been a very positive and bubbly atmosphere as we cared for the families and their precious double arrivals," she said.
"It is just incredible that three sets of twins were born here at the Ulster Hospital Maternity Unit on the 75th birthday of the NHS. What’s a party without double the fun!”