First Day Of Summer 2025 Canada Calendar

First Day Of Summer 2025 Canada Calendar. Summer starts at the moment when the sun is farthest north: This is the first day of astronomical summer and occurs as the sun reaches its most northerly or southerly path in the sky.

This is the first day of astronomical summer and occurs as the sun reaches its most northerly or southerly path in the sky. Summer starts at the moment when the sun is farthest north: