On 21st June, the Sun
a
does not set below the horizon at the Arctic Circle
b
does not set below the horizon at Antarctic Circle
c
shines vertically overhead at noon on the Equator
d
shines vertically overhead at the Tropic of Capricorn
Physical GeographyEarth's Motions and Seasons (Solstices)21st JuneSummer SolsticeArctic CircleAntarctic CircleEquatorTropic of CapricornSun's positionHorizon