The June Solstice 2025 is on June 21st, 2025. Learn what it is, its meaning, and how Earth's tilt creates the longest day (Northern Hemisphere) and shortest day (Southern Hemisphere). They refer to the longest & shortest days of a calendar year, respectively, which occur at approximately the same time each year. The longest day of the year is 21 June in the Northern Hemisphere and around 21 December in the Southern Hemisphere. Winter solstice is the shortest day of the year On 21 December, we will once again be heading towards brighter times, when the winter solstice phenomenon occurs in the Northern Hemisphere. In Copenhagen, the day will be only 7 hours, 1 minute, and 16 seconds long. Already the next day, we will get a few seconds of extra daylight. For us, it heralds the longest nights and shortest days of our year. Meanwhile, people in the Southern Hemisphere will celebrate the first day of summer at this solstice.
