Summer Solstice 2024 Date. The summer solstice happens on thursday, june 20, 2024! But why does this happen, and what is the summer solstice?
This year, the solstice will occur on june 20 at 4:51. 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.