Also What constellations are visible at night during the winter solstice (Dec 21st)?|||The sun is in Sagittarius at declination -23.5 degrees on December 21.
Taurus, Orion, Auriga, Gemini are visible in the east after sunset, Aquila, Cygnus, and Lyra are visible in the west, along with Pegasus and Pisces
Download and install Stellarium. It's free. It you want to change the date significantly, download an older version than 0.10.2. Version 0.10.2 has the date change disabled. 0.9.2 has the date change enabled.
http://www.stellarium.org/|||The winter solstice occurs at the instant when the Sun's position in the sky is at its greatest angular distance on the other side of the equatorial plane from the observer's hemisphere.[clarification needed] The seasonal significance of the winter solstice is in the reversal of the gradually lengthening nights and shortening days. Depending on the shift of the calendar, the winter solstice occurs some time between December 21 and December 22 each year in the northern hemisphere, and between June 20 and June 21 in the southern hemisphere[1], during either the shortest day or longest night of the year. Though the winter solstice lasts an instant, the term is also colloquially used like "midwinter" to refer to the full 24-hour period of the day on which it occurs.
Ref: http://en.wikipedia.org/wiki/Winter_sols鈥?/a>
The Sun never changes it's position. It isn't in any consellation.
The Sun does not belong to any constellation. This is because our Earth goes around the Sun. As a result, the Sun moves in the sky relative to the other stars. So, the Sun appears to move through the constellations of the zodiac, which is why you hear that the Sun is in a particular zodiac constellation in a particular month. For example, in September, the Sun is in the constellation of Virgo. In October, it will go to the constellation of Libra, and so on.
You can easily understand this if you draw the picture of the Sun with the Earth orbiting the Sun. Now all the other stars are essentially at infinite distance (the nearest star is at 4.3 light years which is much farther away from the 8 light minutes at which the Sun is located). Now, you can see the relative position of the Sun with respect to the stars and see how it changes as the Earth goes around the Sun.
Ref: http://curious.astro.cornell.edu/questio鈥?/a>
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