When Is The Summer Solstice 2024. But why does this happen, and what is the summer solstice? The solstice always occurs between 20 and 22 june, and during a leap year (such as 2024) it always falls on 20 june.

Solstice—the longest day of the year in the northern hemisphere and the shortest in the southern hemisphere—will occur on thursday, june 20, at 20:50 universal time (4:50. Today (june 20) the summer solstice — the longest day of the year in the northern hemisphere — will begin, and it will be the earliest solstice in 228 years.