March Equinox in Comoros ― Date, History, and Details
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History of March Equinox in Comoros and How to Celebrate/ Observe It
The March equinox is the moment when the Sun crosses the celestial equator – the imaginary line in the sky above the Earth’s Equator – from south to north. This happens on about March 20-21 every year.
In the Northern Hemisphere, the March equinox marks the first day of spring (vernal equinox). In the Southern Hemisphere, it’s the first day of autumn (autumnal equinox).
Around the time of the March equinox, day and night are nearly equal in length all over the world. The word “equinox” comes from the Latin words aequus (equal) and nox (night).
On the day of the March equinox, the Sun rises in the east and sets in the west, just as it does any other day of the year. But on this day, the Sun rises precisely due east and sets precisely due west.
This is because, on the day of the March equinox, the Earth’s axis is tilted neither toward nor away from the Sun. The Earth’s axis is always tilted at an angle of about 23.5 degrees from the perpendicular to the plane of the Earth’s orbit around the Sun. But on the day of the March equinox, the Earth’s axis is pointing neither toward nor away from the Sun.
As the Earth orbits the Sun, the tilt of its axis causes the seasons. During the Northern Hemisphere’s winter, the Earth’s axis is tilted away from the Sun. As a result, the Sun’s rays hit the Earth at a slanted angle. They don’t reach far into the Northern Hemisphere, so the days are shorter and the nights are longer.
In summer, the Earth’s axis is tilted toward the Sun. The Sun’s rays hit the Northern Hemisphere at more of a direct angle, so the days are longer and the nights are shorter.
The same thing happens in the Southern Hemisphere, but reversed. The Southern Hemisphere has its summer when the Northern Hemisphere has its winter, and vice versa.
So the March equinox is the moment when the tilt of the Earth’s axis is neither toward nor away from the Sun. It’s the moment when day and night are equally long all over the world.