For those of us living in Denver, December 21st marks an important celestial event—the winter solstice—the official start of winter and the longest night of the year in the Northern Hemisphere. This moment happened at 4:20 AM EST today, signaling the precise moment the Earth’s axial tilt is at its maximum away from the Sun. While you’re cozying up with a warm drink, let’s explore what this day means, why it happens, and how to make the most of the winter season ahead.
The Science Behind the Solstice
To understand the solstice, we first need to revisit some fundamental science. The Earth’s tilt (23.5°) relative to its orbit around the Sun is the reason we experience seasons. During the winter solstice, the Northern Hemisphere is tilted the farthest from the Sun, making this day the shortest in terms of daylight and the longest night.
The Sun’s lowest point in the sky at midday marks the solstice. Here in Denver, that means a noontime Sun that will appear low on the southern horizon, casting long shadows and signaling that we have just reached the peak of winter’s darkness. Don’t worry, though—the days will only get longer from here!
Sun’s Journey: What to Expect
On the solstice, the Sun is directly over the Tropic of Capricorn, a line of latitude at 23.5° South. So, while we’re bundled up here in Denver (at about 40°N latitude), the Sun’s rays are focused much farther south, in places like Australia, Chile, and Brazil. It’s a reminder of how our planet’s tilted axis shapes our seasons—today, it’s the Southern Hemisphere’s turn for summer!
A Closer Look at Earth’s Orbit
Many people think that the changing distance between the Earth and Sun causes the seasons. In fact, it’s not the distance but the tilt of the Earth’s axis that drives seasonal shifts. That said, our planet’s orbit is elliptical, meaning the Earth is slightly closer to the Sun in early January (during perihelion) and farther away in early July (during aphelion). However, the change in distance—about 1.6 million miles—is not enough to noticeably affect the weather.
In the Northern Hemisphere, December 21st doesn’t mark our coldest day, but it does symbolize the beginning of the return of light. After today, the Sun will begin its slow climb higher in the sky each day, and our daylight hours will gradually lengthen. It may take a few weeks before we notice, but we’re on the road to spring!
A Time to Reflect and Reset
The winter solstice has been celebrated for thousands of years. Across cultures, it has symbolized rebirth, renewal, and the triumph of light over darkness. In ancient times, it was common to light bonfires, feast, and mark the occasion with rituals celebrating the return of the Sun. While modern traditions may look different, there’s still something powerful about embracing this moment of stillness and reflection.
In Denver, the solstice is an invitation to slow down and reconnect with the natural rhythms of the Earth. Take time to appreciate the beauty of the winter landscape—whether it’s the soft glow of the city’s holiday lights, a hike in the crisp mountain air, or simply enjoying a cozy evening inside as snowflakes drift past your window.
How to Celebrate the Solstice
Whether you’re seeking quiet solitude or enjoying festive gatherings, the winter solstice offers a chance to pause and reset. Here are a few ideas for celebrating the season in Denver:
- Take a Winter Solstice Hike: Bundle up and head to the Red Rocks Amphitheatre or Chautauqua Park for a beautiful winter hike. With snow-capped peaks and quiet, serene landscapes, it’s the perfect way to connect with nature on the shortest day of the year.
- Celebrate with a Candlelight Vigil: Light some candles at home to mark the return of the light. It’s a small but powerful gesture to honor the growing daylight.
- Winter Stargazing: With longer nights, the winter solstice is an excellent time to stargaze. Bundle up, head to a quiet spot like Golden Gate Canyon State Park or Lookout Mountain, and enjoy the clear, crisp winter sky.
- Cozy Up with Family or Friends: Whether you’re enjoying a hot chocolate or a hearty winter meal, the solstice is a great time to spend with loved ones. Take a moment to share your hopes for the new year, embrace the beauty of the season, and celebrate the light that’s on its way back.
Looking Ahead: The Promise of Longer Days
While winter has officially arrived, the winter solstice reminds us that the dark days are temporary. Each day following today will bring just a little more light, as we move toward the Vernal Equinox in March. In Denver, that means more time to enjoy the outdoors, whether you’re hitting the slopes or simply taking a stroll in the afternoon sunshine.
So, as we embrace this season of stillness and reflection, remember that the promise of brighter days is on the horizon. The solstice is not just a moment to mark the beginning of winter, but a reminder that the cycles of nature are always shifting—and the light will return.
Happy Winter Solstice, Denver! Let’s celebrate the longest night and look forward to the lengthening days ahead!