Dublin was pipped to the post by Limerick for the honour of welcoming the arrival of the first baby of 2016.
Kieran Patrick Gibbons was born just 11 seconds into New Year's Day at University Hospital Limerick.
It was a long time coming for mum Jennifer O'Neill, whose labour began on Wednesday and took almost 48 hours. Both mum and baby Kieran, weighing 8lbs 3oz, are doing well.
In the National Maternity Hospital, at Holles Street, little Gabriela Doncova wasted no time in coming into the world.
She was born at 21 seconds past midnight weighing 8lbs 14oz. Delighted dad Adonias Miranda said both Gabriela and her mother Greta are doing well.
"The due date was January 5, so she came early. We had to drive up from Wexford when Greta's waters broke, we brought her here straight away and there were no problems," he said.
Later, Zac Caprani was safely delivered at the Rotunda Hospital at 12.03am on New Year's Day, much to the delight of proud Blanchardstown parents Leanne Byrne and Keith Caprani.
Little Zac weighed in at almost 9lb 13oz.
Meanwhile, Hannah Adebusayo Adeoye was born at 12.14am at the Coombe Women and Infants Hospital.
Proud mum Michelle, who lives in Tallaght with her family, told the Herald that she had been in the delivery suite for 15 hours on New Year's Eve before getting a C-section.
"We were joking yesterday, saying: 'She's waiting until 12am,'" Michelle said.
"She wanted to be a New Year baby, but we didn't realise."
Hannah's dad, Kehinde Adeoye, and her siblings Jessica (18), Kayla (7) and Michael (18 months) were on hand to welcome her.
Both parents called it "the best New Year ever. Her full name means 'the crown that has added to our joy'," said Kehinde.