Day Of Summer 2024. In 2024 the summer solstice will occur on thursday 20 june at 21.51 bst (20.51 gmt). I n 2024, june 20 marks the summer solstice, the first official day of astronomical summer.
The true solstice will arrive in the northern hemisphere at exactly 4:51 p.m. In 2024 the summer solstice will occur on thursday 20 june at 21.51 bst (20.51 gmt).