Friday marks the beginning of winter, the autumnal equinox in the Northern Hemisphere Pipa News

Friday marks the beginning of winter, the autumnal equinox in the Northern Hemisphere

Friday marks the autumnal equinox in the Northern Hemisphere, a celestial event that results in equal length of day and night on this particular day.

Earth’s axial tilt and its relative position in its orbit around the Sun give rise to seasons such as summer or winter. According to the Astronomical Society of India, there are two equinoxes in a year, during which the sun’s rays falling on the earth are perpendicular to the earth’s axis. It is also the time of year when the Sun crosses the equator in either the northern or southern hemisphere.

The autumnal equinox marks the beginning of the winter season in the Northern Hemisphere and during the months that follow, the Northern Hemisphere moves away from the Sun.

After the autumnal equinox, the length of days begins to decrease in the Northern Hemisphere, and cooler weather gradually sets in. This is in contrast to the Southern Hemisphere, where summer begins.

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