What is 365.25 days?

365.25 days is how long it takes Earth to go all the way around the Sun.

Imagine you have a toy train that goes around a track. Each time it finishes one full loop, that’s like one year for Earth. But here's the twist, your toy train doesn’t always take exactly 365 laps to finish its journey. Sometimes it takes just a tiny bit more.

Earth is kind of like that toy train. It goes around the Sun once every year, but not exactly 365 times, it's actually about 365 and a quarter times! That extra quarter means we have to add an extra day sometimes.

Every four years, we get a special day called leap day (February 29th). It’s like giving your toy train a little head start so everything stays in sync. Without it, our calendar would slowly drift out of line with the seasons, just like how your toy train might fall behind if you didn’t give it that extra boost!