A solstice is the day when the sun is at its highest or lowest point in the sky. The summer solstice signals the beginning of astronomical summer and the winter solstice signals the beginning of winter. Perhaps most importantly though, the solstices mark the longest and shortest day of the year. Summer Solstice 2025 in India falls on June 21. Know its timing, significance, and why it marks the longest day of the year. Summer solstice , the two moments during the year when the path of the Sun in the sky is farthest north in the Northern Hemisphere (June 20 or 21) or farthest south in the Southern Hemisphere (December 21 or 22). Learn more about the summer solstice in this article. Summer Solstice : 21st JuneWhy in News 21 st June is the longest day in the Northern Hemisphere, technically this day is referred to as Summer solstice . In Delhi, the day length is around 14 hours. The amount of light received by a specific area in the Northern Hemisphere during the summer solstice depends on the latitudinal location of the place. 21 st June is also observed as the International Yoga Day. Key Points Meaning of the Word ‘ Solstice ’: It is a Latin word that means ‘stalled ...