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Mars could have a Leap Day like Earth but way more complicated

A view of Mars. Credit: NASA/JPL-Caltech

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5 years ago

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February 29, “leap day”,  is an oddity on the calendar that occurs every four years in an attempt to sync up the Gregorian calendar (the calendar most of the world uses to keep time) with Earth’s rotation around the sun.

One calendar year on Earth is 365 days long; however, the Earth actually takes 365.2422 days to lap the sun. That puts the planet roughly a quarter of a day behind at the end of each year.

To maintain consistency and ensure the seasons line up each year, an extra day was added to the already short month of February — a modification that happens every four years. But even this doesn’t fully solve the problem; additional tweaks are needed.

For instance, if a year is divisible by 100, there’s no extra day — unless the year is divisible by 400. That means that 1700, 1800 and 1900 did not have a leap day, but 2000 did. This adjustment ensures that Earth is as close as possible to the same point in its orbit in consecutive calendar years and keeps our seasons inline.

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Unsurprisingly, Earth is not the only planet that needs leap days. The phenomenon could occur on other planets in our solar system as well as those around other stars. That’s because you can’t fit an exact number of spins into one trip around the sun for any planet. There’s usually going to be something left over. Leap days on other worlds, such as Mars,  could be more complicated than those here on Earth.

One year on Mars lasts for approximately 668.6 Martian days. (A Martian day is called a sols and equals 24 hours, 39 minutes, and 35.244 seconds.) Future inhabitants might decide that a year on the red planet will be described as 668 days. How do we adjust?

Over the decades, many different ideas for the Martian calendar have been proposed. The most popular one, called the Darian calendar, was created in 1985 by Tomas Gangale.

According to Gangale, the Martian calendar would feature 24 months, each named for the Latin and Sanskrit words for the constellation of the zodiac, like Sagittarius and Dhanus, and so forth. The first five months in each quarter would have 28 Martian days (or sols), with the sixth having only 27. Even-numbered years would total 668 days and odd-numbered years would have 669. The exception to that rule: even-numbered years that were divisible by 10.

An artist’s concept depicts astronauts and human habitats on Mars. Credit: NASA

Another option was proposed by Michael Allison, a retired NASA scientist. In his version, the Martian calendar would have 668-days divided into 22 months, each totaling 30 or 31 days, similar in fashion to Earth. To make sure the seasons lined up, all years divisible by five will have three leap days, bringing the total to 671.

So which of these calendars do scientists use to keep track of time on Mars? Currently, none.

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Instead, they use two systems to keep track of time: one counts the number of Martian days since the start of a mission, and the other keeps track of where Mars was in its orbit at that time.

Right now scientists don’t care if the seasons line up perfectly with the calendar, but that may change when you add humans into the mix. NASA and other space agencies around the world have their sights set on Mars. Once humans land on the red planet and spend significant time there, we are going to need a common calendar to keep track of seasons.

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I write about space, science, and future tech.

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Elon Musk

Tesla Supercharger Diner officially opens: menu, prices, features, and more

Tesla’s Supercharger Diner in Los Angeles is open after seven years in the making.

Published

7 hours ago

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July 21, 2025

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tesla diner in los angeles during daytime
Credit: Matt Hartman

Tesla has officially opened its Supercharger Diner in Los Angeles to the public for the first time. It is an 80-Supercharger lot with two movie screens and a full-service 24/7 diner that serves a wide variety of locally sourced food for patrons while they charge or even just stop by.

It is not exclusive to Tesla owners, as anyone can stop by to experience the Diner and movie theater. It officially opened to the public at 4:20 p.m. local time.

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In 2018, CEO Elon Musk said he was hoping to build a full-scale 50s era diner that served as a drive-in movie theater. Seven years later, it has officially come to life, and in typical Tesla fashion, it opened at a very appropriate time of day. We heard of people waiting as many as 13 hours for the site to open.

Tesla Diner Menu

BURGERS & SANDWICHES

  • Tesla Burger: $13.5
    • 1/3 lb. prime Brandt Beef with New School American cheese, lettuce, caramelized onions, pickles and Electric Sauce on a Martin’s Potato Roll
    • Add bacon: $3
    • Add Wagyu beef chili: $3
    • Add organic free-range fried egg: $2
    • Sub veggie patty
  • Hot Dog: $13
    • All-beef Snap-o-Razzo hot dog with mustard and onion pickle relish on a Martin’s Potato Roll. Served with fried potatoes
    • Add New School cheese sauce: $1
    • Add Wagyu beef chili: $1
  • Diner Club Sandwich: $13
    • Roasted turkey, Epio Bacon, blistered cherry tomatoes, lettuce, avocado and maple black pepper mayo on toasted Tartine buttermilk bread
  • Tuna Melt: $14
    • Wild-caught albacore tuna salad with New School American cheese and pickles on grilled Tartine buttermilk bread
  • Fried Chicken & Waffles: $15
    • Classic or spicy pickle-brined organic free-range chicken between two buttermilk waffles with maple black pepper mayo
    • Add New School cheese sauce: $1
    • Add bacon: $2
    • Add organic free-range fried egg: $3
    • Sub Martin’s Potato Roll
  • Grilled Cheese: $9
    • New School American cheese on grilled Tartine buttermilk bread
    • Add blistered tomatoes: $1
    • Add Avocado: $1.50
    • Add Epic Bacon: $3

ALL-DAY BREAKFAST

  • Egg Sandwich: $12
    • Two organic free-range scrambled eggs on a Martin’s Potato Roll with Epic Bacon, New School American cheese, baby arugula and Electric Sauce
    • Add avocado: $1.50
    • Substitute waffle Avocado Toast: $11
    • Sliced avocado, lime, tomatoes, pepitas, radish and arugula on toasted Tartine buttermilk bread
  • Greek Yogurt Parfait: $9
    • Strauss Creamery organic Greek yogurt, roasted strawberries, organic gluten-free granola and local honey
  • Breakfast Tacos: $9
    • Organic free-range scrambled eggs, beef chorizo, crispy potatoes and New School American cheese sauce folded inside two Tehachapi Grain Project organic flour tortillas. Served with a side of avocado crema
    • Sub bacon: $1
    • Add avocado: $1.50 Biscuits & Red Gravy: $15
  • Buttermilk biscuit with beef chorizo gravy and an organic free-range fried egg
  • House-Baked Cinnamon Roll: $7
    • Warm, frosted cinnamon roll with flaky salt

SIDES

  • Tallow-fried French fries: $4
    • Make it a cheese fries: $1 extra
    • Make it Wagyu chili cheese fries: $3 extra
  • Hash Brown Bites: $8
    • Crispy, tallow-fried shredded potatoes served with choice of dip
  • Wagyu Beef Chili Cup: $8
    • RC Provisons Wagyu beef chili with diced white onion and New School American cheese sauce
  • Buttermilk Waffle: $5 • Dusted with powdered sugar, served with real maple syrup
  • Market Salad: $10
    • Market kale and arugula, blistered cherry tomatoes, radishes, celery, shredded carrots, avocado, salted pepitas and toasted breadcrumbs.
    • Served with Dilly Ranch
    • Add roasted turkey: $3
    • Add fried chicken: $3.50
    • Add veggie patty: $4.50
    • Add tuna salad: $5
  • Epic Bacon:
    • $12 Four strips of maple-glazed black pepper bacon served with choice of dip

KIDS MENU

  • Kids Burger: $13
    • Prime Brandt Beef with New School American cheese
  • Kids’ Grilled Cheese: $13
    • New School American cheese on grilled Tartine buttermilk bread. No crust
  • Chicken Tenders: $13
    • Made with organic free-range chicken

DESSERTS

  • Soft Serve: $6
    • Chocolate, vanilla or swirl
  • Slice of Pie à la Mode: $12
    • Warm slice of Winston’s apple or pecan pie (gf) served with Valley Ford Creamery softserve a la mode
  • Chocolate Chip Cookie: $5
    • Warm chocolate chip cookie with flaky sea salt

DRINKS

  • Cane sugar sodas: $4 each: Cola, diet cola, lemon-lime, root beer, orange, black cherry or cream.
  • Milkshakes $8
    • Vanilla, chocolate or strawberry. Make it a Pie Shake for an extra $4
    • (apple or pecan).
  • Lemonade: $4
  • Organic Draft Kombucha: $8
  • Drip Coffee: $4
  • Nitro Cold Brew: $4.5
  • Espresso (hot, iced, decaf): $4
  • Cappuccino (hot, iced, decaf): $5.5
  • Latte (hot, iced, decaf): $6
  • Iced Nitro Matcha: $6.5
  • Charged Sodas:
    • Creamsicle: $7
      • Orange soda, cream soda, vanilla foam, fresh orange and orange popping boba
    • Shirley Temple: $7
      • Lemon-lime soda, grenadine, fresh lime and maraschino cherries
    • Lime Rickey: $7
      • Lemon-lime soda and fresh lime
    • Catawba Flip: $7
      • Grape soda, vanilla foam, nutmeg and grapes
    • Dirty Kombucha: $10
      • Citrus kombucha, vanilla foam, fresh orange and lime, maraschino cherries.

Tesla Diner Details

The opening of the Diner was launched by Franz von Holzhausen, Tesla’s Chief Designer:

There is also merchandise available at the Diner, including:

  • Tesla Bot Action Figure
  • Hollywood Retro Diner Tee
  • Tesla Sweets | Supercharged Gummies: Dog Mode Chill, Mango Bolt, and CyberBerry
  • Tesla Diner Trucker Hat
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Elon Musk

Elon Musk’s Neuralink posts massive update with new milestone

This is the first time Neuralink has successfully implanted two patients in a single day.

Published

12 hours ago

on

July 21, 2025

By

neuralink link device with white background
(Credit: Neuralink)

Elon Musk’s Neuralink has posted a massive update with a new milestone that puts the company’s progress into perspective. Over the past few years, we have seen tremendous strides in Neuralink’s capabilities.

Now, the company has completed a new first, bringing more hope to the future of this revolutionary technology.

Neuralink’s third brain chip patient shares first video edited with BCI

Neuralink revealed in an update on Monday morning that it has officially completed two implants in a single day, with Patients 8 and 9 both receiving devices over the past weekend.

“Both participants are recovering well and in great spirits,” the company said in the short update. It did not disclose which day the surgeries were completed, but it did state explicitly that they both occurred on the same day:

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Musk said that Neuralink’s capabilities could do “life-changing good for ultimately millions, maybe billions, of people.” Right now, it is being used to help combat life-altering diseases, such as ALS, also known as Lou Gehrig’s Disease, as well as cervical spinal cord injuries.

Eventually, Neuralink could resolve things like anxiety, depression, and blindness, among many other ailments.

Its Link device also received FDA recognition for speech restoration earlier this year, marking a significant bit of progress in the program as it explores ways to cure ailments of various natures.

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Elon Musk

Elon Musk gives key update on plans for Tesla Diner outside of LA

More Tesla Supercharger Diners are on the way, Elon Musk says, as long as the initial one is successful.

Published

13 hours ago

on

July 21, 2025

By

tesla diner supercharger in los angeles california at night
Credit: Tesla

Elon Musk has given a key update on its plans for the Tesla Supercharger Diner, as the first location in Los Angeles is set to open today, July 21.

The idea for the Supercharger Diner, which resembles a 50s-style eatery with elements of futuristic technology, is seven years in the making. Many wondered whether Tesla would expand its idea for a Supercharger restaurant outside of LA, and now we have an answer directly from Musk.

Elon Musk confirms awesome new features at Tesla Diner Supercharger

The Tesla CEO said that the company will establish these types of experiences “in major cities around the world, as well as at Supercharger sites on long distance routes.”

The Supercharger Diner has plenty of ways to draw in customers, and although the food and merchandise sold at the location will not be a major contributor to Tesla’s balance sheet, where investors want to see it, it could pay off in other ways.

The Diner is not exclusive to Tesla owners, so those who drive gas cars can still stop in for a burger, fries, and a shake while roaming around Los Angeles. The features of the Diner, however, do require a Tesla vehicle.

In-car ordering and movie screens syncing to the center touchscreen are two things that Tesla owners will enjoy that other drivers will not. These might be trivial, but the experience on its own could be a way that some consider buying a Tesla.

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It might sound crazy that a singular diner experience would flip someone to buy a car, but it’s not the most outlandish thing we’ve ever come across.

The question is where Tesla will plan to build these Supercharger Diners. Musk has already indicated that Starbase, Texas, will be one location, which fits with one of his other companies, SpaceX.

Austin could be an ideal location, but New York, Miami, Washington D.C., Boston, and plenty of other popular metro areas within the U.S. could see their own diners in the coming years.

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