[SJC_Hacker]

Exactly at the equator the sun is directly overhead (90 degrees) at a single time point (close to 12 on depending on where you are within the time zone) every single day

The only thing that varies over the year is the path it takes to get there. At the solstices (summer/winter) the path curvature is maximal while t the equinoxes (spring/fall) it is a straight line.

[teiferer]

Sorry that's just obviously false. It's only directly above you at the equinoxes, so twice a year. Otherwise it has traveled further north or south.

Before everything was an app, people had physical globes at home which could illustrate this very well.