The event I’m about to describe has probably happened more times than any of us realize. But when it does happen, the event becomes news.

While most of us were ringing in the new year Tuesday night, two separate mothers (one in Washington, D.C. and the other in Toronto) were giving birth to twins, with one baby born on New Year’s Eve and the sibling born on New Year’s Day.

Although born less than 10 minutes apart, each set of twins has the unique distinction of being born not only on separate days but also in separate years.

On December 31, 2013, at 11:58 p.m., Yaleni Santos Tohalino gave birth to a baby girl at MedStar Washington Hospital Center, in Washington, D.C. Then, at 12:01 a.m. January 1, 2014, the baby’s twin brother was born.

In Toronto, two fraternal twin sisters had the same distinction as the Washington babies. At Trillium Health Partners-Credit Valley Hospital, Lindsay Salgueiro gave birth to her first daughter at 11:52 p.m. December 31. Daughter #2 came at 12:00:38 a.m. January 1.

Just imagine the stories these families will tell in the years to come.