How old is a baby born in December 2024?

A baby born in December 2024 is currently 7–11 weeks old.

These babies are considered newborns, as they sleep a lot, wake frequently to feed, and their eyesight isn't great.

The vast majority of them are not sleeping through the night.

Although these children have passed the one-month milestone, their age is still measured in weeks due to their rapid development. For example, they have already grown 0.5–1 inches (1.3–2.6 centimeters) since their birth.