First Day Of Spring 2025 Ontario Canada. For those of us in the northern hemisphere, this is marked by the arrival of the spring equinox (otherwise known as the “first point of aries”). When do the four seasons start in 2025—for spring, summer, fall, and winter?

The spring equinox happens on the specific moment in time when the sun is directly above the earth’s equator,. The first day of spring 2025 serves as a reminder of the cyclical nature of life and the beauty that can be found in change.