When is the shortest day of the year 2009 coming? It'd be tomorrow, December 21st, the Winter Solstice 2009 - shortest day of the year. Well, it's not actually the shortest day of the year if you consider the number of hours it has, it is still a 24 hour day, what makes it short is the daylight it will be having; those who live in the northern hemisphere will experience a short daylight tomorrow, the winter solstice will happen at 17:47 coordinated universal time and it happens when the North Pole is 23.5 degrees away from the sun.

Here is an explanation of the winter solstice from Wikipedia:

The Winter Solstice occurs exactly when the earth's axial tilt is farthest away from the sun at its maximum of 23° 26'. Though the Winter Solstice lasts an instant in time, the term is also colloquially used like Midwinter to refer to the day on which it occurs. For most people in the high latitudes this is commonly known as the shortest day and the sun's daily maximum position in the sky is the lowest. The seasonal significance of the Winter Solstice is in the reversal of the gradual lengthening of nights and shortening of days. The Winter Solstice is also the shortest day or lowest sun position for people in low latitudes located between the Tropic of Cancer (23°26'N) and the Tropic of Capricorn (23°26'S).


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