The solar equator is the latitude on Earth at which the Sun is directly overhead; where the sun is vertically above at midday. Because of the inclination of the Earth's orbit the solar equator varies during the year, from the Tropic of Capricorn on the December solstice to the Tropic of Cancer on the June solstice. During the equinoxes, the sun is directly overhead on the geographic Equator and the sun can never be overhead areas outside of the URL 
The solar equator is the latitude on Earth at which the Sun is observed directly overhead at midday. Due to the obliquity of Earth's axis, the solar equator varies during the year, from the Tropic of Capricorn on the December solstice to the Tropic of Cancer on the June solstice. On the day of either equinox, the Sun's position is at the zenith when viewed from the geographic equator. The Sun can never be observed directly overhead from outside of the URL The solar equator is coplanar to the ecliptic.
R
directly overhead; where the sun is vertically above
observed directly overhead
R
Because of the inclination of the
Due to the obliquity of
R
orbit
axis,
R
During the equinoxes, the sun is directly overhead on the geographic Equator and the sun
On the day of either equinox, the Sun's position is at the zenith when viewed from the geographic equator. The Sun
R
overhead areas
observed directly overhead from
A
The solar equator is coplanar to the ecliptic.