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On Monday in the northern hemisphere will begin astronomical spring

March 20 2006

On Monday, at 23:36 Moscow time in the Northern Hemisphere will begin astronomical spring - when the sun moves from the Southern Hemisphere into the North.

According to " Interfax ", the day when the heavenly body moves from one hemisphere to the other, called the day of the equinox. During the spring equinox, day and night are equally divided - 12 hours and seasons of the hemispheres are changing, if in the southern hemisphere autumn, the northern - spring. In addition, the daylight hours increases and begins a gradual transition to white at night.

At Pulkovo Observatory noted that this day is a lot of interesting natural phenomena: the earth, revolving around an imaginary axis, is in a position relative to the Sun, when the sun's rays fall vertically at the equator, and the imaginary axis of the Earth is in a central position with respect to Sun. During this period, both hemispheres, from the equator to the poles warm up the same way.

After May 10 for astronomers, a period of white nights. After the spring equinox, specialists will complete the winter program of observations.

The Earth is twice a year in this position, when day and night in the day on an equal time - March 20 - the vernal equinox, and September 23 - the day of the autumnal equinox.

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