Summer Solstice 2024 Time Edt. Edt), the june solstice occurred, marking the longest day of the year in the northern hemisphere. โ in 2024, the summer solstice will occur on june 20, at 20:51 gmt in the northern hemisphere, and on december 21, at 09:20 gmt in the southern hemisphere.
As per nasa, the official date is june 20 at 4:50 pm edt. In 2024, summer solstice in the northern hemisphere will occur on thursday, june 20 around 4:50 p.m.