When Is The Longest Day Of The Year 2025 Calendar. 20 june will be the longest day of 2025 in the northern hemisphere, midsummer day. For 2025, the men's calendar features 36 races across 13 countries and four continents, and for the women, it's 29 events across 12 countries and three continents.

In the northern hemisphere, the next summer solstice will take place on june 21, 2025. This is the day when the sun’s annual journey through the constellations of the zodiac carries it to its.