When Is It Officially Summer 2024. 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. Time will tell if it’s another dream team, but the roster for the united states men’s basketball team at the upcoming 2024 summer olympics in paris was officially revealed.

Find the answers to common questions, like: Students are out of school for the summer, but when does summer officially start?