DictionarysolsticeLongest or shortest day
noun

solstice

SAHL-stis/ˈsɑːlstɪs/

Either of the two times each year when the sun is farthest north or south of the equator.

The diagram shows Earth at the two solstices.

A compact astronomical illustration of Earth at the two solstices: a central Sun and two opposite orbital positions, with Earth's parallel tilted axes making the northern polar region continuously illuminated on one side and continuously dark on the other.
Etymology

The roots picture the sun “standing still.” They name the apparent pause at its greatest distance from the equator, marking the yearly extremes of daylight.

In context

Kurt Nilsson1:23
the path of the sun continues to lengthen until the summer Solstice the longest day of the year
The Apparent Path of the Sun

More examples

  • The celebration took place near the winter solstice.
  • The diagram marks both solstices.
  • We watched the sunrise on the solstice.

Forms

solstice · solstices

Similar words

equinox
At an equinox, day and night are roughly equal; a solstice marks an extreme of seasonal daylight.