Tiffy Allyson

What Is The First Day Of Summer 2024. Thursday, june 20 is the official first day of northern astronomical summer for 2024 — summer solstice — which is the longest day of the year for this half of the planet. But what is the first day of summer in 2024?

The summer solstice is nearly here, and we’re sharing all of the details about the first day of summer—take a look! In the northern hemisphere this year, the first day of summer is thursday, june 20, 2024.