Adjective
directly beneath the sun
between the tropics; equatorial
Source: en.wiktionary.orgIn other words, the equinoxes are the only times when the subsolar point is on the equator, meaning that the Sun is exactly overhead at a point on the equatorial line. Source: Internet
Compared to the rest of the planet’s atmosphere, the subsolar region was highly active and irregular. Source: Internet
The subsolar point will cross every latitude between these two extremes exactly twice per year. Source: Internet