At the June solstice, which tropic has the subsolar point?

At the June solstice, the subsolar point lies on the Tropic of Cancer.

The subsolar point is the place on Earth where the Sun appears directly overhead at local solar noon. Because Earth’s axis is tilted, this point moves north and south between the two tropics during the year. Its northernmost position occurs at the June solstice, when it reaches roughly 23.4° north latitude—the location of the Tropic of Cancer.

The Equator receives the subsolar point at the March and September equinoxes. At the December solstice, the point reaches the Tropic of Capricorn instead. The Arctic Circle is not a subsolar line: it marks the southernmost latitude where the Sun can remain above the horizon for a full day at the June solstice.

The name “Tropic of Cancer” is historical. When the line was named, the Sun appeared in the constellation Cancer at the June solstice; due to precession, it now appears in Taurus.