When Is The First Day Of Spring 2024 Canada.  — with more snow and freezing temperatures looming in ontario, it's safe to say we're all collectively counting down until the arrival of spring. Canadians will soon have to adjust their clocks an hour ahead as we draw closer to the start of spring.

 — at exactly 11:06 p.m.  — the first day of spring (march equinox or vernal equinox) is when the sun shines directly on the celestial equator passing from south to north and the length of day.