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First Day of Winter 2010 1. The first day of the astronomical or calendar winter is December 21, 2010 in the Northern Hemisphere.
2. The first day of the climatological winter (as defined by the World Meteorological Organization) is December 1 in the Northern Hemispere.
3. The first day of the ecological winter occurs locally with the end of the growing season. This date varies from one region to another and can shift from one year to the next; however in general, the ecological winter begins in November in cool temperate climates and December in mild temperate climates.
2. The first day of the climatological winter (as defined by the World Meteorological Organization) is December 1 in the Northern Hemispere.
3. The first day of the ecological winter occurs locally with the end of the growing season. This date varies from one region to another and can shift from one year to the next; however in general, the ecological winter begins in November in cool temperate climates and December in mild temperate climates.
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In Hemispheres
When is the first day of winter?
The official first day of the astronomical winter as mandated my the International Astronomical Union is December 21/22, 2011 (depending on the time zone) for the northern hem…isphere and June 21, 2012 for the southern hemisphere. The official first day of the climatological winter as mandated by the World Meteorological Organization is always December 1 local time for the northern hemisphere and June 1 local time for the southern hemisphere. Canada and the USA customarily observe the astronomical winter while Australia and New Zealand observe the climatological winter. Preference for either of these methods varies in other western countries. Many east Asian countries use lunar dates to determine the beginning of winter and the other seasons. In temperate climates, an ecological winter can be determined that starts with the first regular snowfalls or when most hibernating animals have retreated to their winter quarters. It depends on what day it is? (MORE)
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In Hemispheres
First day of winter?
The first day of winter is 45 days after the autumn equinox [mid autumn] and 45 days before the winter solstice [mid winters day]. The first day of winter falls on about the 5…th November, which as a date was celebrated by the lighting of fires and beacons. (MORE)
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In Science
What is the date of the first day of winter?
Dec. 21. 2010 It depends on the hemisphere. In Australia and New Zealand, for example, the first day of winter is always 1 June.
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When is the first day of winter in Brazil?
In the South Hemisphere the winter starts on 21st of June, the same day in the Northern Hemisphere starts the summer.
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In Seasons
First name of day of winter?
I assume you are referring to the Winter Solstice, which occurs on December 21st in the Northern Hemisphere.
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In Seasons
When is the last day of Winter 2010?
In the Northern Hemisphere, the last day of winter is March 19, 2010, and the Vernal Equinox (first day of Spring) is March 20, 2010. In the Southern Hemisphere, the last day… of winter will be September 22, 2010. (MORE)