First Day Of Summer 2024 Time And Date. The summer solstice in 2024 will occur on thursday, june 20. Summer 2024 starts on thursday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth's axis having reached its furthest tilt and begins to change directiion back.

The june solstice occurs at 4:51 p.m. This year’s summer solstice will arrive this thursday on june 20 for the northern hemisphere, according to nasa.