Daytime length

Have you ever noticed that some days it seems like the sun is out forever, and other days it goes away pretty quick? That's because of something called daytime length. Daytime length is how long the sun is up in the sky during the day.

There are a few things that affect daytime length. One of the main things is the Earth's tilt. You know how when you're playing with a globe or a ball, you can turn it so that the top is leaning over more than the bottom? That's kind of what the Earth does too. It's tilted over a little bit.

When the Northern Hemisphere (that's the top half of the Earth, where we live) is tilted more toward the sun, it's summertime. That means the days are longer and the sun stays out for more hours. But when the Northern Hemisphere is tilted away from the sun, for example during winter, the days are shorter and the sun goes down earlier.

Another thing that can affect daytime length is where you live. If you live closer to the equator (that's the middle part of the Earth), the sun stays up for about the same amount of time every day. But if you live closer to the North or South Pole, the days can be really long in the summer and really short in the winter.

So, in summary, daytime length is how long the sun stays up during the day. It changes depending on the Earth's tilt and where you live. Longer days happen in the summer and shorter in the winter.