When Was The First Day Of Summer 2024. The first day of summer arrives with the solstice this year on thursday, june 20, 2024 at 4:51 p.m. The first day of summer in north america is thursday, june 20, 2024.
This is the longest day of the year and marks the start of. This year, the summer solstice falls on thursday, june 20 at 4:50 p.m.