It's hard to beat the feeling of the warmth of the winter sun on your face. There's a word for it too: apricity. Uplifting, hopeful, calming — even a few short moments to bask in an unexpected, weak but glorious gleam of winter sunlight is wonderful.

A brief burst of apricity warms the spirits and your skin. It reminds me of distant warm, long, summer days, and the promise of spring in a few months. If it has been bleak and cold, apricity is that much more welcome.

From the UK's position in the Northern hemisphere, with the sun low on the horizon, you can let the sun hit full in your face in the middle of the day without craning your neck or leaning back. It's never too hot to seek shade, and often just the right brightness that facing it dead on with your eyes closed is ideal. Together with the long shadows of winter, the effect can have you swept up with the rays, letting them soak into your skin and transporting you away from the cold under your feet.

From the latin aprico, 'to warm in the sun', and in turn aperio, 'lying open', it has been around since at least 1623. It feels to me like we'd benefit from its resurgence.

Apricity

From the combination of sol (sun) and sistere (cause to stand or stop) the solstice marks the highest or lowest points of the sun’s path in the sky each year.

In summer, for instance, the sun’s arc in the sky stops its daily ascent at the longest day of the year. There it reverses, beginning its descent to the autumnal equinox — with equal day and night — and eventually to its lowest point at the year’s shortest day, the winter solstice. At that point, its descent finished, the sun once again begins its slow climb towards the summer solstice.

Solstice

It’s pretty hard to get to grips with the scale of the solar system when Venus, the closest planet, feels really far already. But we’re practically squished together compared to Uranus and Neptune — they are a really, really, really long way away.

James O'Donoghue has made some brilliant videos about the solar system that explain this and more.

Solar system planets — distances to scale

On the equinox there is nearly exactly 12 hours of daylight and night — the day and night are perfectly balanced. On these days the sun rises almost due East and sets due West. The Spring equinox and Fall equinox are the transition between the seasons of Winter to Spring or Summer to Fall, depending on if your days are getting longer or shorter. The other seasons transition at the solstices.

Technically, the equinox is the instant “the plane of Earth’s equator passes through the center of the Sun.” (wikipedia) This usually happens around the 20 March and 23 September.

The equinox exists due to the tilt of the Earth. See Seasons

Sketchplanations tagged with sun