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Based on the astronomical definition, winter begins at the winter solstice, which in 2010 occurred late on December 21 (early on December 22 in EST), and ends at the March equinox, which in 2011 occurred on March 20. [2] Based on the meteorological definition, the first day of winter is December 1 and the last day February 28. [3]
January 0 or 0 January is an alternative name for December 31.January 0 is the day before January 1 in an annual ephemeris.It keeps the date in the year for which the ephemeris was published, thus avoiding any reference to the previous year, even though it is the same day as December 31 of the previous year.
On October 20, 2011, the National Oceanic and Atmospheric Administration's Climate Prediction Center issued its U.S. Winter Outlook. The outlook expected the present La Niña to persist and intensify into the winter, resulting in drier than normal conditions in the drought-stricken states of New Mexico, Oklahoma, Texas, and parts of adjacent states.
Each calendar year includes parts of two winters. This causes ambiguity in associating a winter with a particular year, e.g. "Winter 2018". Solutions for this problem include naming both years, e.g. "Winter 18/19", or settling on the year the season starts in or on the year most of its days belong to, which is the later year for most definitions.
The 2018–19 North American winter was unusually cold within the Northern United States, with frigid temperatures being recorded within the middle of the season.Several notable events occurred, such as a rare snow in the Southeast in December, a strong cold wave and several major winter storms in the Midwest, and upper Northeast and much of Canada in late January and early February, record ...
The season lasts until the spring equinox, which often occurs on or around March 20. The second has to do with meteorological winter which varies with latitude for a start date. [ 1 ] Winter is often defined by meteorologists to be the three calendar months with the lowest average temperatures.
Most calendar-based partitions use a four-season model to demarcate the warmest and coldest seasons, which are further separated by two intermediate seasons. Calendar-based reckoning defines the seasons in relative rather than absolute terms, so the coldest quarter-year is considered winter even if floral activity is regularly observed during ...
December 8 (Eastern Orthodox liturgics) Constitution Day (Romania) Constitution Day (Uzbekistan) Day of Finnish Music ; Earliest day on which National Tree Planting Day can fall, while December 14 is the latest; celebrated on the second Monday in December.