The couple's first child could be the nation's first of 2016.
At the stroke of midnight on Jan 1, Mr Tan Nan An and Ms Chen Yi Feng, both 30, welcomed their son Evan - weighing 2.7kg - at Thomson Medical Centre.
The first babies of 2015 and 2014 were also born in the hospital.
"I was surprised that he's the first New Year baby," said Ms Chen, a dental operations manager. "I'm very happy that my son is joining everyone for the New Year celebrations."
Evan had been due to arrive on Jan 9 and his birth lasted seven hours.
"The pain during labour is one thing that all the mothers will go through, so I really salute all the mothers that go through it without the (epidural) injections," she said.
"But I think the baby's first cry was very touching."
The couple married 11/2 years ago and Mr Tan, a support manager in a bank's investment department, recalled being moved when he felt and saw his son kicking inside his wife's belly.
"We just hope that he continues to be a healthy baby," he said. "Everything else, we'll just let nature take its course."
Asked if they plan to have more children, Mr Tan said: "I think we plan to have another one."
But given the pain, Ms Chen joked: "I want to reconsider."
While they may not have received the SG50 Baby Jubilee gift set given to Singaporean children born in 2015, babies born this year at Thomson Medical get a travel bag filled with essential items such as napkins, body wipes and skincare products. Less than a minute after Evan's birth, at least two other babies were born - at Mount Alvernia Hospital and Parkway East Hospital.