Solstice Equinox Dates 2024. Canada equinox and solstice dates. An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length.
It was only the second time that the equinox had fallen on march 19 in more than a century. Spring equinox 20 march, summer solstice 21 june, autumn equinox 22 september, winter solstice 21 december.