Last Day Summer 2024 Date. Memorial day (university closed) may 27: 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.

This year, summer began on june 20 and will end on september 22. In 2024 the summer solstice will occur on thursday 20 june at 21.51 bst (20.51 gmt).