A twin brother and sister left their parents "speechless" as a result of being born in different decades, The Sun reports.

Dawn Gilliam gave birth to daughter Josslyn at 11:37 pm on December 31, and her son Jaxon was born at 12:07 am, shortly into the new year.

And so, the special siblings, who were born at Ascension St. Vincent Hospital in Carmel, Indiana were born not only in different years but in different decades - one in 2019 and the other in 2020.

“We’re kind of speechless still,” the newborns' father Jason Tello told reporters on Friday per The Sun.

The babies were actually not due until February, but Gilliam and Tello went to the hospital on New Year's Eve over concerns related to a lack of fetal movement.

"They were like, ‘You might have to deliver today,’" Gilliam told the Indianapolis Star.

Gilliam also says that she and Tello, who have two older boys, 10 and 5, knew that Joslyn was going to be born first.

“She's been in position for most of the pregnancy," she said. "Of course, he was breech. So, it took a while for him to come."

But it wasn't all plain sailing for a couple, who received a medical scare around Thanksgiving time and thought they would have to deliver then. There were also concerns over Gilliam's blood pressure.

“Earlier, we talked about it would be great to have them born on different dates," Tello adds. "But here we are with this surprise - different dates, different years. That was definitely interesting for us for sure."

"I guess it doesn't click that, 'Wow! We had two babies.' I'm like, 'Wow! There's actually two,’” Gilliam told WBNS.

According to WBNS, the twins while healthy, are currently on feeding tubes, but are expected to be discharged from the hospital soon.

A twin brother and sister left their parents "speechless" as a result of being born in different decades, The Sun reports.

Dawn Gilliam gave birth to daughter Josslyn at 11:37 pm on December 31, and her son Jaxon was born at 12:07 am, shortly into the new year.

And so, the special siblings, who were born at Ascension St. Vincent Hospital in Carmel, Indiana were born not only in different years but in different decades - one in 2019 and the other in 2020.

“We’re kind of speechless still,” the newborns' father Jason Tello told reporters on Friday per The Sun.

The babies were actually not due until February, but Gilliam and Tello went to the hospital on New Year's Eve over concerns related to a lack of fetal movement.

"They were like, ‘You might have to deliver today,’" Gilliam told the Indianapolis Star.

Gilliam also says that she and Tello, who have two older boys, 10 and 5, knew that Joslyn was going to be born first.

“She's been in position for most of the pregnancy," she said. "Of course, he was breech. So, it took a while for him to come."

But it wasn't all plain sailing for a couple, who received a medical scare around Thanksgiving time and thought they would have to deliver then. There were also concerns over Gilliam's blood pressure.

“Earlier, we talked about it would be great to have them born on different dates," Tello adds. "But here we are with this surprise - different dates, different years. That was definitely interesting for us for sure."

"I guess it doesn't click that, 'Wow! We had two babies.' I'm like, 'Wow! There's actually two,’” Gilliam told WBNS.

According to WBNS, the twins while healthy, are currently on feeding tubes, but are expected to be discharged from the hospital soon.