In nearly a third of all th countries in the world, people do something kind of weird every six months.

We change our clocks by one hour ahead or behind and then go about our lives like nothing is different.

What's that all about?

Why do we do daylight savings and why do we have to change the clocks?

There are 24 hours in a day.

No matter what time your watch says it is.

So why on earth do we change our clocks back and forth?

The basic idea behind this change in the spring and fall is to take advantage of the daylight.

In the summer months, depending on where you live in the world, the sun can rise at 4:30 in the morning or even earlie when most people are sleeping.

So if you shift your clock ahead by an hour to 5:30 a.m., that's a little bit closer to when some of us might be waking up to start our day.

So you get more of the daylight hours when you're actually awake, and specifically when you're done with school or work, and can use those late, sunny afternoons and evenings to play, or have a picnic or work in the garden or whatever else you want to do.

We call that daylight saving time to differentiate from standard time, and then in the fall, when the sun can set super early, we give that hour back.

That's a handy way to remember it, actually, spring forward, fall back.

I mentioned about a third of the world's countrie do this daylight saving dance, but it used to be more like half the world participating.

Over time, some countries have dropped the custom, and perhaps with good reason.

Lots of public health officials say it can disrupt your sleep patterns to switch back and forth.

Some politicians in the U.S. have suggested we should quit the practice altogether.

But if it were up to you, which one would you keep?

Daylight saving or standard time?