The winter solstice in 2025 occurs on December 21st, marking the shortest day and longest night of the year in the Northern Hemisphere, with only about nine hours and 17 minutes of daylight in places like Steamboat Springs. This event signifies the start of astronomical winter, which lasts until March 19, 2026, when spring begins. The solstice results from Earth's tilt away from the sun, causing the sun's lowest arc in the sky and the least sunlight exposure. Historically, the solstice has been celebrated across cultures, symbolizing rebirth and change, with monuments like Stonehenge aligned to its position. In the Northern Hemisphere, the days will gradually get longer after December 21, while in the Southern Hemisphere, it marks the beginning of summer. The solstice also coincides with cultural observances such as Yule, celebrating the return of the sun. Shorter days can impact mood and health, leading to conditions like Seasonal Affective Disorder, which can be managed with light therapy and outdoor activity. Community events like yoga celebrations are organized to help people connect and find inner light during this dark time.