First Day Of Summer 2024 Time Zone

First Day Of Summer 2024 Time Zone. Summer begins with the solstice on thursday, june 20, 2024, marking the astronomical first day of summer in the northern hemisphere. According to time and date, the summer solstice in arizona will start at 5:18 a.m.

Is it really the longest day of the year?. Astronomers consider this the beginning of the summer in the northern hemisphere, nasa said.