What Is The Last Day Of Summer 2024. The summer solstice, also known as the june solstice arrives june 20 at 4:51 p.m. The summer solstice occurs in june in the northern hemisphere and marks midsummer:
In north america, summer officially begins on thursday, june 20. Itโs the longest day of the year and follows father’s day and juneteenth, which fall earlier in the same week.