Solstice, summer and winter, the two recurring periods of the year at which the sun is farthest distant N. or S. from the equator, which mark midsummer and midwinter, the times being the 21st of June and 22nd of December; also applied to the two points in the ecliptic (q.v.), which the sun appears to reach on these two dates.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Solon * Solway Firth