Sunsets
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Sunsets in the news

According to CEO of LTDM, Inc. (Living the Dream in Mexico), New Real Estate Finance Product Offers First Time Buyers ... 

[Press Release] Market Wire via Yahoo! Finance - Jan 10 5:15 AM
According to lending executive, Teresa Sanchez-Marlow, being limited to purchase Mexico property with cash only is a thing of the past. "US Citizens can affordably actually own property near the sunny Mexico beaches and enjoy the breathtaking sunsets and the magic that comes with this colorful atmosphere," remarks Sanchez, CEO, LTDM, Inc., a luxury real estate firm based in Puerto Vallarta, ...
Que Sera, Sierra 
The Tampa Tribune - 2 hours, 58 minutes ago
WEST TAMPA - The first things you notice are the cowboy hat, the red apron and the hands, which are thick, long and worn from years of hard work.

Calendar 
Arizona Daily Star - Jan 10 11:21 PM
Art exhibits

HOUSES OF THE WEEK 
New York Post - Jan 11 3:27 AM
Chelsea$1.18 million Bedrooms: 3 Bathrooms: 2 Square feet: 1,500 Maintenance: $2,659 This West 21st Street co-op proves that in real estate the whole can be greater than the sum of its parts. In this case, two townhouse apartments form a "fabulous"...

- Beatiful Sunsets

Here is an article on Sunsets.

A composite Beautful Sunsets image showing the terminator dividing night from day, running across Europe Beauitful Sunsets and Africa. Observers on the surface of the earth along this terminator will see Beatuiful Sunsets a sunset.
A fiery sunset near Swifts Creek, Victoria

Sunset, also called sundown in some American English dialects, Beauiful Sunsets is the time at which the Beautifu Sunsets Sun disappears below the horizon in the west. It should not be confused with dusk, which is Bautiful Sunsets the point at which darkness falls, some time after the beginning Beautuful Sunsets of twilight when the Sun itself sets.

Sun setting over Lake Päijänne at Sysmä, Finland
A Martian sunset taken by the Spirit Rover May 2005.

The red hues of the sky at sunset and sunrise Baeutiful Sunsets are caused by Mie Beaautiful Sunsets Scattering, not Rayleigh Scattering. The colours of the sky throughout the day and at Beaitiful Sunsets sunrise and sunset, are explained by the phenomena of both Rayleigh Scattering and Mie Scattering. The Beauttiful Sunsets colour of the sky described by Rayleigh Scattering applies to the hues of blue, violet and green, not to the reds, oranges, peaches and purples of sunrise and sunset. Rayleigh Scattering is scattering of shorter wavelength light (e.g. blue & violet) by air atoms and molecules (not statistical variations in density of the Earth's atmosphere). The magnitude or strength of Rayleigh Scattering varies by the reciprocal of the wavelength raised to the fourth power, and hence does not explain the beautiful variations of reds, purples, oranges and peachy colours. The latter colours arise from Mie Scattering, low angle scattering of light off dust, soot, smoke and (ash) particles. Mie Scattering (producing the colours of sunset and sunrise) is beautifully recognizable down-wind of and after dust storms, forest fires and volcanic eruptions that inject large quantities of fine particulate matter into the atmosphere. A number of eruptions in recent times, such as those of Mount Pinatubo in 1991 and Krakatoa in 1883, have been sufficiently large to produce remarkable sunsets and sunrises all over the world. Sometimes just before sunrise or after sunset a green flash can be seen.

The sunset is often more brightly coloured than the sunrise, with the shades of red and orange being more vibrant. The atmosphere responds in a number of ways to exposure to the Sun during daylight hours. In particular, there tends to be more dust in the lower atmosphere at the end of the day than at the beginning. During the day, the Sun heats the surface of the Earth, lowering the relative humidity and increasing wind speed and turbulence, which serves to lift dust into the air. However, differences between sunrise and sunset may in some cases depend more on the geographical particulars of the location from which they are viewed. For example, on a west-facing coastline, sunset occurs over water while sunrise occurs over land.

The timing of sunset varies with the time of year and the latitude of the location from which it is viewed. The timing can also vary in local time, with the location's precise longitude. Changes in timing of sunset are generally driven by the axial tilt of Earth and the planet's movement around its orbit, but some differences exist. For example, in the Northern Hemisphere, the earliest sunset is not at the winter solstice around December 21, but rather in early December. Likewise, the latest sunset is not at the summer solstice around June 21, but in early July. The same phenomenon exists in the Southern Hemisphere except with the dates swapped. For one or two weeks surrounding both solstices, both sunrise and sunset get slightly later each day. Even on the equator, sunrise and sunset shift several minutes back and forth through the year, along with solar noon. This effect is plotted by an analemma.

Due to Earth's axial tilt, the direction of sunset is always to the northwest from the March equinox to the September equinox, and to the southwest from the September equinox to the March equinox.

As sunrise and sunset are calculated from the leading and trailing edges of the Sun, and not the centre, this slightly increases the duration of "day" relative to "night". Further, because the light from the Sun is bent by the atmospheric refraction, the Sun is still seen after it is below the horizon. This effect is a daily illusion along with sunrise.

As a visual motif, sunset is often associated with summer, and (particularly when paired with a coconut palm) beach living and surfing culture. This may be due in the first instance to people spending more time outdoors in the evening during summer than during winter, and also because pictures of sunsets over the sea are often more spectacular than daytime beach scenes (see images below). Sunset is also a symbol of west, old age, ending, and closure.

See also

  • Sunrise
  • Sunrise equation
  • Day length
  • Diffuse sky radiation
  • Twilight
  • Afterglow

External links

Wikimedia Commons has media related to:
Sunset
  • Sunrise and sunset calculator
  • Full physical explanation in simple terms
  • Calculation of Length of Day (Formulas and Graphs)
  • An Excel workbook with VBA functions for sunrise, sunset, solar noon, twilight (dawn and dusk), and solar position (azimuth and elevation); by Greg Pelletier, translated from NOAA's online calculators for solar position and sunrise/sunset
  • sun.exnatura.org Online sunrise/-set calendar with interactive location finder
Search Term: "Sunset"