First Day Of Summer 2024 Northern Hemisphere. The 2024 summer solstice falls on thursday, june 20 at 20:50 gmt. It’ll be the longest day of the year north of the equator, and it is the scientific.

This year’s summer solstice will arrive this thursday on june 20 for the northern hemisphere, according to nasa. This happens a few days before the official start of spring (vernal.