What Day Is The Last Day Of Summer 2024 Uk.  — 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.  — 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.

 — 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. The summer solstice is also known as the longest day, which is perhaps the most notable feature.