Summer Solstice 2024 Day Length. Since the astronomical year is 365.25 days long, the summer solstice for the northern hemisphere currently shifts between june 20, 21 and 22. (it can change a day from this date from year to year.) from then on, the days begin to get shorter, until we.
Here’s everything you need to know about the northern hemisphere’s longest day of the year. Find the answers to common questions, like: