The sun is directly overhead at the summer solstice at the Tropic of Cancer (23.5oN). This is as the most northernly latitude which has the sun directly overhead at any time of the year. A similar case happen at the winter solstice at the Tropic of Capricorn (23.5oS).
Location of the sun directly overhead is 13.90 degrees north latitude or 13.54 degrees north latitude in nautical miles at 12 pm UTC/GMT April 27 2012
summer solstice
I think that the sun is only ever directly overhead the equator at noon on any day of the year.
The sun is directly overhead the Tropic of Cancer on the June Solstice, which can either fall on June 20 or 21 each year.
The sun is never directly over any point in Maryland. The sun can never be directly over any point located more than roughly 23.5 degrees north or south of the equator, whereas the latitude of Crisfield on the Eastern Shore ... the southernmost point in MD ... is about 38 degrees from the equator.
The Tropic of Cancer ... roughly 23.5 degrees north ... is the most northerly latitude where the sun can ever appear directly overhead.
8 degrees north
summer solstice
180° north longitude
summer solstice
Location of the sun directly overhead is 13.90 degrees north latitude or 13.54 degrees north latitude in nautical miles at 12 pm UTC/GMT April 27 2012
summer solstice
summer solstice
summer solstice
There is no latitude on earth at which the sun would be directly overhead at noon on the equinox and the solstice.
The sun can never be directly overhead, at any time of day on any day of the year, at any place on earth whose latitude is greater than 23.5 degrees, north or south.
I think that the sun is only ever directly overhead the equator at noon on any day of the year.