( ( ( ( ( During ( equinox times ) ) ( ( ( the ( Sun 's ) ) ( vertical ray ) ) ( is ( ( shining directly ) ( on ( ( the ( Earth 's ) ) equator ) ) ) ) ) ) and ) ( ( neither hemisphere ) ( is ( tilted ( ( ( toward or ) away ) ( from ( the Sun ) ) ) ) ) ) ) . )
(ROOT (S (S (PP (IN During) (NP (JJ equinox) (NNS times))) (NP (NP (DT the) (NNP Sun) (POS 's)) (JJ vertical) (NN ray)) (VP (VBZ is) (VP (VBG shining) (ADVP (RB directly)) (PP (IN on) (NP (NP (DT the) (NN Earth) (POS 's)) (NN equator)))))) (CC and) (S (NP (DT neither) (NN hemisphere)) (VP (VBZ is) (VP (VBN tilted) (PP (PP (IN toward)) (CC or) (RB away) (PP (IN from) (NP (DT the) (NNP Sun))))))) (. .)))
During equinox times the Sun's  vertical ray is shining directly on the Earth's equator and neither hemisphere is tilted toward or away from the Sun.
(ROOT (S (NP (DT The) (NN sun)) (VP (VBZ is) (ADVP (RB directly)) (PP (IN over) (NP (DT the) (NN equator))) (PP (IN during))) (. .)))