The Summer Solstice happens at 6:09 pm on Wednesday.  Here, the earth's axis tilts +23.5 degrees toward the sun.  At this angle, the sun appears directly overhead at the Tropic of Cancer.  This is the farthest north point on earth that the sun directly shines over.

After the solstice, the earth's begins tilting the opposite direction as the Fall Equinox comes our way in September.  Then, the sun will be directly over the equator.