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of the first official Spring

May 19th 2014 at 9:26 PM

This afternoon and specifically at 18:57 GMT officially begins the Spring of 2014 in the northern hemisphere, which belongs to our country, and vice versa in the southern hemisphere starts in autumn.

principle of spring-the most beautiful for most people-season coincides with the spring equinox, when day and night are almost equal. After 20 March the days will continue to grow until they reach their peak during the summer solstice of June 21.

Earth performs a complete rotation in 24 hours around its axis, which is tilted 23.5 degrees . This inclination, in conjunction with the annual elliptical orbit of the Earth around the Sun, it takes about 365 days, the switch creates the four seasons. 's equinoxes (spring and autumn) determine the onset of spring and autumn

while the solstices (summer and winter) determine the onset of summer and winter respectively. The spring has no fixed start date and times of the year, they have the same duration. The first day of spring varies between 19 (more rarely), 20 (usually) and on 21 March, depending on the year. Nowadays, in the northern hemisphere winter lasts about 89 days (less than all seasons), the spring almost 93 days,

nearly 94 summer days (over all seasons) and fall almost 90 days. Cumulatively, the warm period of the year (spring and summer) is about more than one week's cold (autumn and winter). Temporal, the duration of spring rate is reduced to approximately one minute per year, while the winter is reduced by almost half a minute per year

. Conversely, during the summer growing at an annual rate of one minute (losing the spring), while autumn increases by half a minute (losing winter). According to the older Julian calendar, which was established by the Roman emperor Julius Caesar,

vernal equinox each year beginning 11 minutes earlier, so the year 1500 equinox occur on March 11. To remedy this problem, among others, Pope Gregory 13os introduced in 1582, called the Gregorian calendar, which is more accurate.

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