Lifestyle
Your Zodiac Sign Is 2,000 Years Out of Date
Whether you care about horoscopes or not, you probably know your zodiac sign. You’ve probably known it for most of your life.
Zodiac signs were originally based on the stars. But over thousands of years, our view of the stars has shifted. That means, if you account for this shift, your sign might not be what you think.
Below, we’ll tell you what it would be instead.
There are three reasons the zodiac signs no longer line up with the constellations they’re named after.
1. Earth’s wobble
The Earth wobbles like a top. A spinning top starts to wobble soon after it is set into motion. The Earth does the same thing, only more slowly.
It takes 26,000 years for the North pole to trace out a complete circle in the sky, pointing at different stars along the way. Scientists call this wobbling motion axial precession.
This wobble means that our view of the stars shifts by one degree every 72 years. Over centuries, this difference builds up.
And it’s not just the Northern stars that shift in our view because of Earth’s wobble, but all stars — including the zodiac constellations.
Take the spring equinox, usually around March 20, the first day of spring in the Northern hemisphere (and the start of the zodiac calendar in Western astrology).
This shift in our view of the stars was discovered by Hipparchus over 2,000 years ago. Since you can’t see stars during the day, he waited for a lunar eclipse — when the moon is directly opposite the sun — and used the moon’s position to work out where the sun was.
By comparing his measurement with earlier ones, he found that our view of the stars shifts by about one degree per century — not too far from modern measurements.
Today, Western astrology uses the tropical zodiac system, which is based on the positions of the stars more or less as they would have appeared to Hipparchus, and not as they appear today.
That means that the zodiac signs familiar to Americans are in sync not with the stars, but with the seasons: Aries starts on the first day of spring, even though the sun is now in front of Pisces then.
In contrast, the Indian system of astrology uses the sidereal zodiac, which accounts for Earth’s wobble and aligns zodiac signs to the stars.
While these two systems were initially aligned, they have been drifting apart ever since. Western astrologers are well aware of this mismatch, but they don’t see a problem with basing the signs on the stars as they were two millennia ago.
“Astrologers using the tropical zodiac are just using what they consider to be an equally valid system,” said Dorian Greenbaum, a historian of astrology who teaches at the University of Wales Trinity Saint David.
2. Constellations differ in size
The zodiac signs were created around 2,500 years ago by the Babylonians.
Their star catalogs listed at least 17 zodiac constellations. But they eventually simplified these into the 12 zodiac constellations we know today, each 30 degrees wide, as if slicing the sky into 12 equal slices.
But constellations aren’t really the same size. In 1928, astronomers divided the sky into 88 officially recognized constellations, each one shaped like its own puzzle piece.
Official constellations along the sun’s annual path
“They are not nice equal pieces,” said Stacy Palen, emeritus professor at Weber State University. “They’re like jagged shapes that are not symmetric in any way.”
Based on these boundaries, the sun spends more than twice as much time in front of Virgo as in front of Cancer. And it spends only a week in front of Scorpio — if you include Ophiuchus, that is.
Which brings us to the last reason the 12 signs don’t align with the zodiac constellations.
3. Ophiuchus
Ophiuchus is the 13th constellation along the sun’s path, according to astronomers. (It even has its own emoji: ⛎.) Ophiuchus means “serpent bearer” in Ancient Greek, and is usually depicted as a man holding a snake. If you squint, you can kind of see why.
So for people born during the sign of Scorpio 2,000 years ago, Ophiuchus was more likely behind the sun on their birthday. (And because of Earth’s wobble, most Sagittarians today were also born when Ophiuchus was behind the sun.)
We don’t really know why the Babylonians left out Ophiuchus from their zodiac signs. They may have originally had a different name for it. But historians believe that when Babylonians simplified their zodiac system, they wanted the 12 zodiac signs to match the 12 months of their calendar. Ophiuchus didn’t make the cut.
A ‘shape-shifter’
Astronomy and astrology have little in common today, and there’s no scientific basis to the idea that the movements of the stars and planets influence our future or our personalities. But the two disciplines started out as the same thing thousands of years ago.
“If you were an astronomer, you were also an astrologer,” Professor Greenbaum said.
The Babylonians viewed the planets as gods, and planetary motions as omens that could foretell the fortunes of kings and kingdoms. This motivated them to look for patterns in the sky.
Even by the 17th century, many astronomers were also practising astrologers. Johannes Kepler, who discovered how planets move in ellipses, probably learned astrology at college, and created horoscopes for friends and patrons. Galileo practiced astrology and sold horoscopes on the side.
“Their side hustle was to cast horoscopes for their rich patrons because that paid the bills,” said Tyler Nordgren, an astronomer and author.
Eventually, during the Enlightenment, astrology was divorced from astronomy and was no longer considered a legitimate science, Professor Greenbaum said.
“It was kicked out of the universities,” he said. “But there were still practitioners.”
Today, we understand the laws governing the motions of planets and stars well enough to send spacecraft to distant worlds, detect gravitational waves and take pictures of a black hole. At the same time, over a quarter of Americans believe that the positions of the stars and planets can affect their lives.
So why has belief in astrology endured, while other methods of divination like ornithomancy (finding omens in the behavior of birds) or tyromancy (fortune telling with a block of cheese) have drifted into obscurity?
“Astrology is a shape-shifter,” Professor Greenbaum said. “Astrology goes along with whatever’s in vogue and manages to survive.”
Because those constellations are behind the sun, they’re in the daytime sky, and so you can’t actually see them on those dates. You’ll need to wait until they’re in the night sky, about six months from the date you entered.
How we found your sign
Though the astrological zodiac calendar is well known, there are small ways ours may differ from other sources. To calculate your astrological zodiac sign, we divided the sun’s annual path across the sky (known as the ecliptic) into 12 equal divisions of 30 degrees, beginning with the March equinox, which marks the beginning of Aries. This is the tropical zodiac system, in which zodiac signs are aligned to the seasons.
To calculate the astronomical zodiac constellation behind the sun, we used the Astronomy Engine software library to locate the sun on every day of the year and determine the astronomical constellation behind it.
We based our zodiac calculations on the current year, and on the position of the sun at noon UTC every day. A more accurate calculation of your sign would involve knowing the exact time and year of your birth, and as a result our calculations may be off by a day or so. This primarily affects people whose birthdays are on the cusp between two signs, or between two constellations.
To create the 3D illustrations of the stars, we used a repository of celestial data for the 88 official constellations, and oriented these constellations based on Earth’s view of the stars on a given date.
The astronomical calculations account for precession (the slow wobble in Earth’s axis of rotation), nutation (a slight wiggle in the tilt of Earth’s axis), and the gradual drift of Earth’s elliptical orbit.
Our star maps do not account for the movement of individual stars through space, relative to each other, known as proper motion. This movement is typically so slow as to be minimal over centuries, but the positions of some of the stars in the Northern sky during the last ice age may be in slightly different locations than shown.
In our visualizations, we used the familiar names Scorpio and Capricorn instead of the official names for those constellations: Scorpius and Capricornus. The seasons we describe are for the Northern hemisphere. The Earth’s orbit around the sun is actually counterclockwise when viewed from above; we show it orbiting clockwise for illustrative purposes. The Earth and the sun are not to scale.
Phil Pritchard of the Hockey Hall of Fame works the 2019 NHL Awards at the Mandalay Bay Events Center on June 19, 2019 in Las Vegas, Nevada. (Photo by Bruce Bennett/Getty Images)
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Paul W. Downs can’t help it that even on the weekends, his life intersects with “Hacks,” the HBO comedy he co-created and co-showruns with his wife, Lucia Aniello, and their friend Jen Statsky. (He also appears on the show as Jimmy LuSaque Jr., the besieged manager of its two stars, played by Emmy winners Jean Smart and Hannah Einbinder.) The fifth and final season of “Hacks” premiered last week, but on Downs’ days off, he often finds himself at its previous filming locations or hanging out with cast members who have become like family.
In Sunday Funday, L.A. people give us a play-by-play of their ideal Sunday around town. Find ideas and inspiration on where to go, what to eat and how to enjoy life on the weekends.
Downs moved to Los Angeles in 2011, but soon after, he and Aniello were hired to write (and for him to act) on the über-New York show “Broad City,” keeping them away from the West Coast for years. Now the couple live in Los Feliz, which they enjoy with their young son.
“I love Los Feliz because it’s a real neighborhood with restaurants and bars, but also feels close to nature with Griffith Park,” Downs says. “Also it’s very central to my Eastside friends and Westside agents.”
And if he had to live at a local mall, like the character Ava Daniels did in the third season of “Hacks,” which would he choose?
“It would be the Americana, obviously.”
Here’s how he’d spend a perfect day in L.A.
10 a.m.: A late rise and a li’l barista
I’m sleeping in if I can, which I can’t because I have a toddler, but let’s say I can sleep ’til 10. That would be insane.
Then I’m making coffee at home. I’m making it with my 4-year-old because he likes to make my coffee now. He always wanted to help, now he really wants to do it on his own. I’m still there to supervise, but he does do a lot of it.
I do batch brew. I’m doing Verve Coffee that I’m grinding there, and then I’m brewing four cups because I need my coffee. I had a Moccamaster for a long time, but I recently got a Simply Good Coffee. There’s no plastic — it’s all glass and metal.
11 a.m.: Chocolate croissants for everyone
We’re driving to Pasadena and we’re going to [Artisanal Goods by] CAR, which is the place to get the best chocolate croissant, I think, in the world. I don’t just think in L.A., I think they’re better than Paris. I’m going there with my wife and my kid and I’m having another coffee and some pastry. We’re ordering three [chocolate croissants]. We’re not doubling up.
11:45 a.m.: The family business
We’re driving to Fair Oaks in Pasadena. There’s a place called T.L. Gurley. We shot “Hacks” there, actually. Not only in Season 1, but also full circle in Season 5. We’re going to shmay around and look at antiques. My kid is going to want to play a vintage pinball machine. We’re going to find a little piece of art for the house or what have you. It’s not necessarily that I’m on the hunt. It’s to pass the time and to have some fun. If I could do anything and have a leisurely day and take my mind off work, that’s what I’m doing.
People love to interact with my kid when he’s there. We’re really training him to appraise things at a young age. My parents are part-time dealers of antiques. My grandmother bought and sold antiques. It’s kind of a family business.
1:30 pm.: Baguettes and books
We’re driving to Larchmont and we’re getting a sandwich at Larchmont Village Wine, Spirits & Cheese. I’m doing prosciutto-mozzarella-basil on a baguette.
Then we’re going to Chevalier’s Books. What’s sad is that I’m often not looking for leisure material. I’m looking for something that I’m interested in learning more about or writing about, or that they’re turning into a show I want to audition for. But we’re also doing Little Golden Books for my son. He’s obsessed. We’re not huge on screen time, so we really encourage the book-buying.
2:30 p.m.: Cast pool party
We’re having some family fun in the pool and we’re doing that until evening. We invite people over all the time. My sister-in-law is a New Yorker, but she actually wrote last season on “The Rooster” and she’s often writing on shows in L.A., so she’s often here and she’ll have a couple friends come over. I know this sounds like a piece of PR or something, but we’ll really literally have Hannah [Einbinder] and maybe Mark Indelicato from “Hacks” come over to swim. Jen, our co-creator of “Hacks,” will come over.
6:00 p.m.: Family dinner
Sometimes we’ll order Grá to the house, which is a pizza place in Echo Park — excellent sourdough crust pizza. But if we don’t do that, an ideal evening is an early dinner at All Time on Hillhurst in Los Feliz. We’re ordering the ceviche and my son is having all of it and not sharing with anybody at the table.
8:45 p.m.: A thrilling ending to the day
After putting my kid to bed, my wife and I, in an ideal world (full disclosure: we haven’t done this in two years), we’ll watch something together that we’ve been meaning to watch. We have a long list of movies and we either want to revisit or that we haven’t seen that we need to watch.
We don’t watch a lot of comedies. It’s a dream to watch a “Black Bag” or a little espionage thriller. We really like that because it’s so different than the stuff that we’re working on in the day.
Often the things we watch are things that we admire. We like deconstructing it as fans of film and television. We do like talking about the making of it, but it’s less of a critique and more of a listing of the things we appreciated about it.
10:30 p.m.: No work tomorrow
And then it’s lovemaking ’til morning on a perfect Sunday. If it’s a perfect Sunday, there’s also a Monday that’s off.
Jay (not pictured) found himself alone and hopeless in a jail cell when a fellow inmate’s unexpected words of comfort changed his life.
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When Jay was 22 years old, he was a self-described loner. In this story, he is being identified by his nickname to allow himself to speak candidly about the following experience and his mental health. He says the few people he did hang out with at the time had questionable morals.
”I chose my friends poorly, and your friends have a tendency to rub off on you. And so I started making poor decisions,” Jay said.
One evening, when he and his friends were out drinking, someone suggested they should try to break into the chemistry building on his college campus. Most of the group shrugged the suggestion off, deeming it impossible, but Jay was convinced he could pull it off.
“The next night I made a plan of how to do it, and I did it,” Jay remembered. “And I didn’t get caught doing it, [but] I got caught afterwards.”
At around 1 that morning, Jay was placed in the county detention center. Sitting alone in his cell, reality began to sink in.
“I pretty much thought that my life as I knew it was going to be over, and I had decided that the world would be better off without me in it.”
Jay made a plan to end his life. As he prepared himself, he began to cry.
“But just in that moment when I was ready to do it, I heard a voice coming from the top left corner of my cell, from a little vent. And someone called out to me and said, ‘Hey, is this your first time?’”
The man who called out was an inmate in the cell next door.
“I collected myself a little bit, and I said, ‘Yeah.’ And he said, ‘Can I pray for you?’”
Jay had grown up religious, but had stopped going to church years before. In that moment, though, he knew he needed support. He said yes, and listened as the man began to pray.
“I wish I could tell you that I remember the [exact] words that he said to me, but what I remember is that his words landed with me, and instead of wanting my life to be over, suddenly I saw hope,” Jay said.
The interaction happened nearly ten years ago, but it was a pivotal moment in Jay’s life, and one he thinks about all the time.
“[Now], I have a good job. I have a girlfriend who loves me. I have a life. But I have a life because somebody who was in the same situation I was in had the courage to talk to a fellow inmate and be kind.”
Jay says that he wishes he could meet that man again and express his appreciation.
“[I would] shake that guy’s hand, give him a hug, and tell him what his small gesture meant for me, how he changed the course of my life.”
My Unsung Hero is also a podcast — new episodes are released every Tuesday. To share the story of your unsung hero with the Hidden Brain team, record a voice memo on your phone and send it to myunsunghero@hiddenbrain.org.
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