When Is Summer 2024 In Usa 2024. Although some consider summer's end to be labor day or when the kids go back to school , the official last day of summer for 2024 is september 22. This is the longest day of the year and marks the start of.
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. Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m.