When Does The Clock Change 2025 Canada. At 2 a.m., we roll back the clocks by one hour and gain an extra bit of sleep. Should ontario keep or scrap daylight.

Millions of canadians change the clocks forward on the second sunday of march, when daylight time starts, and back on the first sunday in november, when it ends at 2 a.m. That means later sunsets and longer days are on the horizon.