Summer Solstice 2025: Northern Hemisphere Experiences Longest Day of the Year

June 21, 2025, marks the Summer Solstice, bringing the longest day of sunlight to the Northern Hemisphere. This astronomical event occurs as the Earth's axial tilt positions the Northern Hemisphere closest to the sun, resulting in extended daylight hours. Across various locations, the duration of daylight varies significantly. For instance, Utqiagvik, Alaska, will experience a full 24 hours of sunlight. In contrast, Honolulu, Hawaii, will see approximately 13.4 hours, and Washington D.C. will have nearly 15 hours of daylight. The Summer Solstice is widely celebrated worldwide. Historically, sites like Stonehenge in the United Kingdom become focal points for gatherings, where people observe the sunrise aligned with the ancient monument. Bonfires are also a traditional way to mark this significant day, symbolizing warmth and light. Conversely, for the Southern Hemisphere, June 21 signifies the Winter Solstice, marking their shortest day of the year. This annual celestial alignment highlights the Earth's dynamic relationship with the sun and its impact on seasonal changes globally.