First Day Of Summer 2024 Calendar With Holidays. Download the calendar to view the full version,. 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.
When is the first day of summer in 2024? The first day of summer this year is thursday, june 20, 2024, per the almanac.