[HIGHLIGHTS] “We would find ourselves celebrating Christmas in the spring”: how was February 29 born?

Almost one year in four, like in 2024, February 29 is added to the calendar. The reason? The Earth doesn't quite take 365 days to revolve around the Sun.

The approximately 40,000 French people born on February 29 will celebrate their real birthday this Thursday. “It’s these decimal places that are problematic,” explains Denis Savoie, astronomer at Universcience and the Paris Observatory. Subscribe Already subscribed? To log in, click here.