Spring Equinox 2024 In Ontario Canada. An equinox is an astronomical event that happens twice, once in spring and once in autumn, each year when the tilt of the earth's axis is inclined. In 2024, it's the earliest in 128 years.

An equinox is an astronomical event that happens twice, once in spring and once in autumn, each year when the tilt of the earth’s axis is inclined. It’s 20 march until 2044, when it will occur on 19 march instead.