Last Day Of Summer 2024 Canada. The summer solstice occurs at 16:54. Thursday, june 20 is the official first day of northern astronomical summer for 2024 — summer solstice — which is the longest day of the year for this half of the planet.

Thursday, june 20 is the official first day of northern astronomical summer for 2024 — summer solstice — which is the longest day of the year for this half of the planet. The following dates are sorted chronologically, beginning in january of 2024.