pics

As others have already said, no, direct overhead sun actually doesn’t happen in a sizable chunk of the world. But I’ll add some personal experience:

I’ve lived at northern latitudes my whole life and two things are always weird when I visit equatorial regions: 1) experiencing true “noon” or true overhead sun 2) the incredibly short sunsets. I also always end up getting fucking roasted by sunburn on vacation, not understanding the power of tropical overhead sun’s radiation intensity. Even if I know it intellectually, I never remember it well enough to avoid getting burned because I can be outside at home in the sun for a lot longer.

Well, it's this range: https://en.wikipedia.org/wiki/Subsolar_point

If you look on a globe, in addition to the equator, you'll see two other lines labeled tropics. These lines represent where on earth, as the planet shifts on its axis through the seasons, the sun is directly overhead at each solstice. Everything north or south of the tropics has noons at less than 90⁰ year round.

Also the mainland US is not inside the tropical circles. Hawaii and Puerto Rico are though.