Usa 2024 Summer Starting Date. Getty images hope you've got your pencils ready and your calendars out: 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.
What are the dates for the four seasons in 2024? When does summer start in 2024?