Luke and Hillary Gardner never have a problem remembering each other's birthday.
After all, the husband and wife were born on the exact the same day. And so was their son, 27 years later this past December.
The odds of that happening are about one in 133,000, statisticians say. That's a lot less likely than getting hit by lightning sometime in your lifetime, which some put at roughly one in 12,000.
They weren't aiming at a joint birthday when their son Cade Lee Gardner was conceived, said Luke Gardner.
"I really didn't even put it together until we got pregnant," he said in a telephone interview on Wednesday.
"Then we realised, 'Oh, wow!"'
Using a smartphone app, he said, his wife calculated a due date of December 15, three days before their joint birthday. Her obstetrician called it for December 19.
So the couple from Baldwyn, Mississippi, got in some exercise to try to hurry the baby up a bit.
The night of December 17, Gardner said, "we went walking" around the parking lot at First Baptist Church of Baldwyn, where Gardner is outreach pastor.
Whether or not the exercise sped things up, Cade was born at 10.01am on December 18 - exactly 27 years after his parents' birthdate.
AP