This tilt gives us our seasons and, twice a year, our solstices. Why are nights and. Webcanada 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. Webthe june solstice (summer solstice) in vancouver is at 1:50 pm on thursday, june 20, 2024. In terms of daylight, this day is 8 hours, 4 minutes longer than the december.