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Autumn Equinox 2017: Today Is the First Day of Fall

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On September 22, at 4:02 p.m. ET, the Sun will shine directly over the equator—the midpoint of the Earth. The whole world will thus experience a day and night of equal length. In the Northern Hemisphere, we call this the autumn equinox. It marks the first day of fall. Around the world, people are marking the day with ceremonies, some of them ancient (and some less so).

You might be wondering two things: 1. Why on almost every other day of the year (the vernal equinox being the other exception) do different parts of the world have days and nights of differing length? 2. What do they call the day in the Southern Hemisphere?

A DAY AT THE BEACH

The answer to each of these questions resides in the Earth's axial tilt. The easiest way to imagine that tilt is to think about tanning on the beach. (Stay with me here.) If you lay on your stomach, your back gets blasted by the Sun. You don't wait 30 minutes then flop over and call it a day. Rather, as you tan, every once in a while, you shift positions a little. Maybe you lay a bit more on one side. Maybe you lift a shoulder, move a leg a little. Why? Because you want the Sun to shine directly on a different part of you. You want an even tan.

It might seem a little silly when you think about it. The Sun is a giant fusion reactor 93 million miles away. Solar radiation is hitting your entire back and arms and legs and so on whether or not you adjust your shoulder just so. But you adjust, and it really does improve your tan, and you know this instinctively.


An autumn equinox celebration at the Neris River waterfront in Vilnius, Lithuania.
Petras Malukas/AFP/Getty Images

The Earth works a lot like that, except it's operating by physics, not instinct. If there were no tilt, only one line of latitude would ever receive the most direct blast of sunlight: the equator. As the Earth revolved around the Sun, the planet would be bathed in sunlight, but it would only be the equator that would always get the most direct hit (and the darkest tan). But the Earth does have a tilt. Shove a pole through the planet with one end sticking out the North Pole and one end sticking out the South, and angle the whole thing by 23.5 degrees. That's the grade of Earth's tilt.

Now spin our little skewered Earth and place it in orbit around the Sun. At various points in the orbit, the Sun will shine directly on different latitudes. It will shine directly on the equator twice in a complete orbit—the fall and spring equinoxes—and at various points in the year, the most direct blast of sunlight will slide up or down. The highest latitude receiving direct sunlight is called the Tropic of Cancer. The lowest point is the Tropic of Capricorn. The poles, you will note, are snow white. They have, if you will, a terrible tan—and that's because they never receive solar radiation from a directly overhead Sun (even during the long polar summer, when the Sun never sinks below the horizon).

WHEN DO THE SEASONS CHANGE?


A Maya priestess conducts an autumn equinox ceremony at El Salvador's Cihuatan Archeological Park.
Jose Cabezas/AFP/Getty Images

The seasons have nothing to do with the Earth's distance from the Sun. Axial tilt is the reason for the seasons. The Sun is directly over the Tropic of Cancer (66.5 degrees latitude in the Northern Hemisphere) on June 21 or 22. When that occurs, the Northern Hemisphere is in the summer solstice. The days grow long and hot. As the year elapses, the days slowly get shorter and cooler as summer gives way to autumn. On September 21 or 22, the Sun's direct light has reached the equator. Days and night reach parity, and because the Sun is hitting the whole world head-on, every latitude experiences this simultaneously.

On December 21 or 22, the Sun is directly over the Tropic of Capricorn in the Southern Hemisphere, meaning the Northern Hemisphere is receiving the least sunlight it will get all year. The Northern Hemisphere is therefore in winter solstice. Our days are short and nights are long. Parity will again be reached on March 21 or 22, the vernal equinox for the Northern Hemisphere, and the whole process will repeat itself.


Druids on London's Primrose Hill marking the autumn equinox.
Matt Cardy/Getty Images

Now reverse all of this for the Southern Hemisphere. When we're at autumnal equinox, they're at vernal equinox. Happy first day of spring, Southern Hemisphere!

And welcome to fall, Northern Hemisphere! Enjoy this long day of sunlight, because dark days are ahead. You'll get less and less light until the winter solstice, and the days will grow colder. Take solace, though, in knowing that the whole world is experiencing the very same thing. Now it's the Southern Hemisphere's turn to get ready to spend some time at the beach.

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8 Awesome Halloween Displays From Around the Country

Looking for some Halloween decorating inspiration? Look no further than these spooky displays. From New Mexico to New York, here are eight creepy homes worth going out of your way for each All Hallows' Eve.

1. THE PUMPKIN HOUSE IN KENOVA, WEST VIRGINIA

C-K AutumnFest—an annual fall festival thrown by the West Virginia towns of Kenova and Ceredo—offers scarecrow-building contests, tractor shows, and home-canning competitions, among other activities. Its highlight, however, is probably the Pumpkin House. The historic Victorian abode once belonged to IRS commissioner Joseph S. Miller, a friend of President Grover Cleveland. But when Ric Griffith moved in, he put it on the map with elaborate jack-o'-lantern displays.

Each year, in late October, the onetime Kenova mayor festoons the home’s yard, porch, rooftops, and gables with 3000 glowing pumpkins, some of which sit on specially built displays with music and lights. The laborious project begins in earnest around a month before Halloween, when Miller and his daughter start drawing faces on the gourds. Then, around five days before AutumnFest kicks off, local volunteers help the duo scoop, carve, rinse, and arrange the jack-o'-lanterns into tiered rows around the house and yard.

You can check out the Pumpkin House in person at this year’s festival, which runs October 27-28. “Due to the shelf life of a carved pumpkin, carving will not begin until October 23,” organizer Kim Layman tells Mental Floss. “Once the pumpkins are carved and set into place, they remain lit 24/7. The best time to see the greatest number of pumpkins lit is the weekend of AutumnFest. Weather permitting, the pumpkins will remain lit through Halloween.”

2. DANIEL'S HALLOWEEN HOUSE OF WARWICK IN WARWICK, RHODE ISLAND

The annual Halloween display at 69 Darrow Drive in Warwick, Rhode Island is so over-the-top that it has its own Facebook page for local fans. Past iterations have featured Halloween props designed by homeowner Mike Daniels, spooky interactive figures, and multi-colored lights synchronized to more than 14 songs. This year’s clown-themed yard show won’t be complete until around mid-October, but there will be “new designs and props and music,” Daniels tells Mental Floss. “We’ve added some awesome new stuff!”

Proving that Halloween isn’t always about tricks and/or treats, Daniels typically leaves out a bin for charitable donations. This Halloween, the collection will be donated to the Spirit of Children hospital foundation, which funds art, music, and other therapeutic projects for children receiving medical care.

3. “OPERATION: SCARE ‘N SHARE” IN WELLS, MAINE

In 2006, Stanley Norton of Wells, Maine, began competing with his brother to see who could build the best Christmas light show. The winner gained bragging rights, and the loser was required to hang a portrait of their sibling in their home with the words “I wish I was my brother” underneath. Norton got so into the challenge that eventually, the satisfaction of beating his brother was no longer enough. About two years after the inaugural lights contest, he also began regularly decorating his home for Halloween, an endeavor he’s since dubbed “OPERATION: Scare ‘N Share.”

Norton’s annual display runs the week before Halloween, and features spooky props and thousands of lights synced to radio music. (They're erected with help from the local Wells Soccer team, which Norton used to coach.) The tunes and lights change each year, but visitors are always asked to bring canned goods to donate to a local food pantry. In 2015, Norton’s Halloween house had so many visitors that they collected close to 1000 pounds of food.

4. THE CUNNINGHAM HAUNT HOUSE IN FARMINGTON, NEW MEXICO

When a prospective career in the haunted house industry didn’t work out for him, Darrell Cunningham, a software programmer in Farmington, New Mexico, decided to turn his passion into a hobby by decorating his own home for Halloween. The project soon morphed into an ongoing tradition that's now six or so years running.

Today, Cunningham, with help from his father, constructs elaborate Halloween displays at his parents’ more spacious abode. The Cunningham Haunt House, as it’s called, features handmade props that Cunningham builds himself. (They've included grim reaper, witch, and angel statues fashioned from chicken wire, plastic pipes, paper mâché, and "monster mud," a special mixture of paint and drywall compound.) There are also plenty of spider webs and fake tombstones, as well as projectors that play music videos like Michael Jackson’s “Thriller."

Since Halloween props are expensive, the father-and-son duo is always soliciting either online cash donations or crafting materials—“decorations, webs, pumpkins, wagons light posts, poles, wood, anything that could make cool props,” according to the Cunningham Haunt House’s Facebook page.

5. 84 MAIN STREET, CAMILLUS, NEW YORK

Trick-or-treaters in the greater Syracuse, New York region visit the town of Camillus to admire (and score candy from) Mickie and Bill Hendrix’s house on 84 Main Street. The homeowners are fans of classic horror films, so each October they transform their residence into a spine-tingling attraction complete with a fog machine, orchestral music, a giant barrel of "toxic waste" that pumps out green goo, and life-sized figures of skeletons, clowns, mummies, and vampires.

The display surrounds the house, and trick-or-treaters are forced to navigate their way through a sea of monsters and ghouls to receive candy at the back door. There, they're greeted by jumping motion-sensor creatures. (Some kids are too scared to come to the door, in which case Mickie Hendrix will toss candy out the window, or go downstairs and hand it to them personally.)

The couple have been decorating their home for more than 16 years. "It started out small and just got bigger and bigger," Mickie Hendrix told Syracuse.com. "It's getting out of control and we're getting older. Thank God for our grandchildren. They helped us get everything out." However, the display might be in its final years, as the couple is planning to eventually move to Florida.

6. TERROR ON TILLSON IN ROMEO, MICHIGAN

Halloween is a community affair in Romeo, a tiny 19th century village in Macomb County, Michigan, where residents transform a single two-block street into a spooky wonderland each October.

It’s said that the seasonal spectacle on Tillson Street began with longtime homeowner Vicki Lee, whose birthday falls on Halloween. To celebrate the occasion, she always decorated her home with pumpkins, corn stalks, and scarecrows. Her enthusiasm for the holiday spread, and as more families with young children moved into the area, other neighbors began building handmade Halloween scenes in their own front yards. Ultimately, around 30 homes joined in on the fun, resulting in the street-wide affair that the village knows and loves today.

Today, an estimated 80,000 visitors are said to visit Tillson Street each year to experience the spectacle—nicknamed Terror on Tillson—for themselves. On Halloween, the street is blocked off so kids can safely trick-or-treat under the watchful eye of a makeshift security team of high school athletes. (In a separate event, Tillson Street residents also team up with the Kids Kicking Cancer organization to provide a safe daytime trick-or-treating event for around 50 children with cancer.)

Terror on Tillson has become so famous that it’s spawned souvenir T-shirts, a neighborhood cookbook, a food drive, and a scholarship fund dedicated to Lee’s late husband, Buzz Lee, who passed away from a brain tumor in 2002. Paying the street a visit, however, is always free of charge.

For more information, visit Terror on Tillson’s official website.

7. EDWARDS LANDING LIGHTS IN LEESBURG, VIRGINIA

For the past seven years, Brandon Bullis of Leesburg, Virginia has created a musical Halloween light show, covering the front of his house with thousands of lights that are synced to blink along with popular tunes. Past examples include Michael Jackson’s “Thriller,” “Handclap” by Fitz and the Tantrums, and "The Fox (What Does the Fox Say?)” by Norwegian electronic group Ylvis, the last of which caused the home to go viral in 2013.

The show—which Bullis has branded “Edwards Landing Lights”—is technically silent, but viewers can listen to its tunes by turning on their car’s radio. They can also add money to a driveway donation box, the proceeds of which are donated to Johns Hopkins Children’s Center.

To see Edwards Landing Lights in person, drive along Woods Edge Drive Northeast in Leesburg, Virginia after dark.

8. EAST 30TH STREET AND TACOMA AVENUE IN LORAIN, OHIO

Ricky Rodriguez constructs Halloween displays that look like movie sets. In 2013, the Lorain, Ohio resident teamed up with his brother Tony to built a giant two-story pirate ship, designed to look like it was crashing through the side of his home. The pirate ship returned to East 30th Street and Tacoma Avenue in 2014 (and presumably 2015), but last year, Rodriguez replaced the vessel with a fabricated steam-powered locomotive, inspired by the final scene of Back to the Future Part III.

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12 Halloween Traditions From Around the World
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Although most Americans spend Halloween dressing up and trick-or-treating, other countries have their own celebratory rituals. Here are 12 Halloween (and Halloween-like) traditions from around the world.

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