Regardless of the fact that the sun shines in front of the constellation Pisces on the March equinox in our day and age, the sun resides at the First Point of Aries on the March equinox (0 degrees of longitude on the ecliptic) in a celestial coordinate system commonly used by astronomers and astrologers. The sun was at 0 degrees of Aries at midnight on March 21st, when it crossed the border from Pisces to Aries.
It will take the sun about seven years to traverse the zodiac, so the next equinox when it is in Aries will be on April 19th, 2014. The sun was in Aries on February 16th, 2011.
During these seven years, there will be two points where the sun is exactly opposite its current position, one in Taurus and one in Gemini. These are called "conjunctions." At other times, the sun will make angles with the horizon similar to those made by Aries when viewed from Earth. These are called "sextiles." There are also times when the sun will be completely blocked from view by Earth's shadow. When this happens, we won't be able to see it! These events are called "solar eclipses."
The exact location of Aries on the celestial sphere is defined by three coordinates: RA, Dec, and Alt-Az.
The Vernal Equinox occurs on March 21, when the sun shines directly over the Earth's equator. Night and day are precisely equal in both the northern and southern hemispheres on this day. The Sun advances towards the northern latitudes from March 21 until June 20 or 22. It then retreats back toward the south during the last week of September or first week of October.
In the northern hemisphere, the sun sets due west around midnight and rises again around 6am the next morning. During the summer months in the Northern Hemisphere, daylight hours increase as the sun moves northward across the sky, reaching its maximum length at the spring equinox and beginning to decrease again as it moves southward toward fall.
In the winter hemisphere, night falls early and stays late throughout the year. On December 21, the day is completely dark where I live in Canada; on March 21, the day is not completely dark but rather has a faint glow from the remaining sunlight reflected off of the ocean.
The word "equinox" comes from the Latin for "equal nights," meaning that at each point along the equator on either side of the planet, night and day are of equal length. At the equinoxes, the tilt of the earth against the orbit of the moon is zero degrees, so there is no lunar influence on the timing of these events.
These are astronomical phenomena unrelated to religion.
Only on the equinoxes does the Sun rise at an azimuth of 90 degrees east and 270 degrees west, and the equinox can and does occur on various days. The angle of the setting sun between the solstices is 47 degrees. During a full moon, the sun will set at an azimuth of 180 degrees.
The Earth's rotational axis leans slightly with respect to its orbital plane. This angle is called "the tilt of the earth's axis". It is 23.5 degrees; this means that the north pole is tilted toward the orbit every day, while the south pole is tilted away from it. The rotation of the planet causes seasonal changes around the world: summer in the northern hemisphere, winter in the southern hemisphere.
These are the only times when the sun sets at exactly 90 degrees to the horizon. Otherwise, it falls below or rises above the horizon by more than 90 degrees.
During a sunset, the lower half of the sky gets dark as light fades from the clouds while the upper half stays bright. The Milky Way appears over certain parts of the country. Stars begin to appear out of the darkness of night during a sunrise.
An astronomical twilight ends when the sun is completely below the horizon.
Learn about your sun sign, especially if you were born on a twilight sign.
Sun Ingresses close to 2020 (2019-2021): | ||
---|---|---|
Date | Time (UTC) | Event |
January 20, 2021 | 8:59 AM | Sun enters Aquarius |
February 18, 2021 | 11:04 PM | Sun enters Pisces |
March 20, 2021 | 9:58 PM | Sun enters Aries |
The sun is usually to the north at the June solstice and never quite gets straight above. The two equinoxes (dark green) follow the same pattern, with the sun rising in the east and sinking in the west, as it does everywhere across the world. At midday, the sun is straight overhead. At the winter solstice, the sun is usually below the horizon for most of the day.
At the summer solstice, the sun is directly over the northern hemisphere's midpoint, but it's not until the autumnal equinox that it's exactly over the center of Earth. At both the equinoxes and the solstices, night falls over the northern half of the planet for six months out of each year, and day for the rest of the year. However, at the winter solstice night falls over the entire northern hemisphere, while at the summer solstice, day shines over the entire globe.
The angle between the horizon and the zenith varies by season and location. But overall, there are two points in the year when the horizon is closest to the sky: at the summer and winter solstices. During these times, the sun is close to being directly over the center of Earth. The opposite is true in the middle of winter and spring.
From about March to May, the days start to get longer as we move into spring.