2024 Summer Solstice Date. When is the first day of summer in 2024? In 2024, the summer solstice will occur on thursday 20 june at 9.51pm bst (4:50 pm edt new york, 1:50pm pdt los angeles).

Here’s everything you need to know about the northern hemisphere’s longest day of the. Edt on june 20, according to timeanddate.com.