Solstice 2025 Dates Calculator

Solstice 2025 Dates Calculator. Equinox & solstice calculator this page will calculate when the equinoxes and solstices are for a given year. The solstice would be either the longest day or the shortest day of the year because it is the length of the time between sunrise and sunset in the summer and winter respectively.

London the exact moment of the summer solstice in 2025 is 21 june, at. The vernal equinox marks the.