What is a Leap Year?

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  • Опубликовано: 30 сен 2024
  • Help support videos like this: / cgpgrey
    Also check out MinutePhysics' video: • What are years... and ... & SciShow: • The Mysterious Leap Se...

Комментарии • 4,2 тыс.

  • @dannyunixanalyst9018
    @dannyunixanalyst9018 8 лет назад +4201

    Q: What is a leap year?
    A: The sun's going to kill us all.

    • @mertoj1536
      @mertoj1536 3 года назад +65

      The surface is now safe and everything is beautiful, come out and see the SUN...

    • @dimanyak373
      @dimanyak373 3 года назад +113

      The sun is a deadly lazer

    • @davidbrodecki154
      @davidbrodecki154 3 года назад +3

      Ummm

    • @millyli912
      @millyli912 3 года назад +12

      @@dimanyak373 I love this dude

    • @sudiptaranade2216
      @sudiptaranade2216 3 года назад +34

      @@dimanyak373 not anymore there is a blanket

  • @RussellNelson
    @RussellNelson 8 лет назад +627

    And then there's leap seconds.

    • @ThePCguy17
      @ThePCguy17 8 лет назад +26

      +Russell Nelson He goes over the cause, but didn't mention them. Brain fry, perhaps.

    • @TheKYLEdavid
      @TheKYLEdavid 8 лет назад +22

      +ThePCguy17 Well to be fair, he said in one of his Q&A videos that he has cancelled a bunch of videos that he deemed "too boring". I would imagine that as this video was in February 2012, he was planning a Leap Second video for June 2012, but ended up cancelling it altogether because one extra second isn't all that interesting, while a whole extra day is interesting.

    • @ThePCguy17
      @ThePCguy17 8 лет назад +2

      TheKyleDavid Yeah, that's also possible, isn't it?

    • @trien30
      @trien30 4 года назад +6

      Gregorian calendar is more accurate than the Julian calendar but not more accurate than the Hebrew calendar or the Chinese calendar. Out of these only the Chinese one is a true lunisolar calendar but I‘d say it still needs a little something to make it a lot more accurate. The worst calendar is actually the Muslim calendar where there are no leap [intercalary (from Latin intercalārius meaning "to insert" which the definition is based on the ancient Greek word εμβολισμος.) or embolismic [from French embolismique (Huh?! This is either a joke or a mistranslation.) via Greek εμβολισμος, "embolismos" from εμβολλειν, "embollein" meaning "to insert": β was a /b/ sound as in "boy" in ancient Greek, which is a /v/ sound as in "voice" in Modern Greek. σ is the "regular sigma" which is placed in the beginning or middle of words; ς is the "final sigma" which is only used at the end of a word instead of σ in Greek.)] days or leap months to make up the discrepancy in relation between the solar and lunar calendars and no way to add other things to sync the seasons.

    • @bencomeau6330
      @bencomeau6330 4 года назад +2

      Years! Seconds are just 11:60 AM/PM for 1 second.

  • @edcrfv098765
    @edcrfv098765 10 лет назад +11

    0:58 here in south america chistmas IS on summer

    • @Riodashio
      @Riodashio 10 лет назад +9

      Good on you for catching his joke.

  • @schmittelt
    @schmittelt 11 лет назад +11

    Time is an illusion. Lunch time, doubly so.

  • @Clairehouse32
    @Clairehouse32 10 лет назад +35

    Luna and Celestia Sun and Moon at 1:20 ???

  • @dasgregorian
    @dasgregorian 10 лет назад +22

    My question has always been: Why have 4 months with 31 days only to have a 28/29 day february? Why not take a day off two of those 31 day months and give them to february. Thus 2 months always have 31 days. 9 months always have 30 days, and february changes between the two. Instead of two completely different values.

    • @legoman7041
      @legoman7041 10 лет назад +8

      Because you still get the same leap year problem.. Also, its impractical to change so many people's birthmonths.

    • @duncanadelaide3959
      @duncanadelaide3959 10 лет назад +7

      While it would make sense to do something like this and many new calendar systems that rearrange months and weeks have been proposed, including some that would make a week either 5 or 10 days, everything is pretty much situated on the calendar we have now and everyone has pretty much decided that the amount of confusion involved in changing things like birthdates, anniversaries, and holidays (especially religious ones like weekly sabbaths) would be more difficult than simply having a weirdly numbered month in the late winter.

    • @Arkalius80
      @Arkalius80 10 лет назад +20

      Because the Romans were annoying. January and February were originally the last two months of the year (which is why February is the short month, and also why SEPTember, OCTober, NOVember, and DECember have names meaning 7, 8, 9, and 10 despite currently being the 9th, 10th, 11th, and 12th months). February also used to have 29 days (30 on leap years). However, when the month of Sextilus (which had 30 days) was renamed Augustus in honor of Caesar, it was decided that it couldn't have fewer days than the month named after Julius (which had 31) days, so they stole a day from Februarius and put it onto Augustus. This is also why you have two months in a row with 31 days.

    • @moothecow6908
      @moothecow6908 2 года назад +1

      Because that would require a bunch if countries agreeing on something

  • @ChristianJiang
    @ChristianJiang 5 лет назад +1

    So now it’s February
    This video just reminded me that February is 28 days long. Hurray! It means that this term will end earlier than expected!

  • @julzbehr6696
    @julzbehr6696 4 года назад +1

    It di s let it self divide nicely!
    Five season-months of 73 days!
    Well, plus an overflow day all 4 years

  • @d007ization
    @d007ization 3 года назад

    I knew the simple answer but I knew CP Grey would have more to say on it.

  • @chenoaholdstock3507
    @chenoaholdstock3507 8 лет назад

    we always celebrate Christmas is summer here in SA

  • @di5963
    @di5963 3 года назад

    I wish we could go back to when we had 10 months, after all, December comes from decem, latin for ten, with added bet at the end, so does September, septem means seven and you can guess what the months between them mean
    The reason why they don't align is because julius and augustus wanted their own months

  • @deltanebula8622
    @deltanebula8622 8 лет назад

    Nice hint there. Please all show this to all officials everywhere XD.

  • @eldukedrino
    @eldukedrino 8 лет назад +13

    I saw pudge ☺

    • @syedferoz2188
      @syedferoz2188 8 лет назад

      wtf is puj doing here

    • @JustSilen
      @JustSilen 7 лет назад +1

      It's not ''Pudge'', Pudge only borrowed the skin model of the Abomination from the actual Warcraft 3, just like every other hero in DotA, since it's a mod for WC3 :)

  • @Fedroy90
    @Fedroy90 Год назад +5

    who else came here from 2023 python bootcamp on udemy

  • @ValpasKankaristo
    @ValpasKankaristo 8 лет назад +2

    1:42 a creeper

  • @narwhalpuppet4496
    @narwhalpuppet4496 2 года назад +1

    This is cool

  • @McNubbin101
    @McNubbin101 7 лет назад

    After I watched this I feel I know even less about how leap years work.

  • @OiuchaErendeteOich
    @OiuchaErendeteOich 9 лет назад

    i celebrate Christmas in summer :) its not that bad

  • @erojerisiz1571
    @erojerisiz1571 7 лет назад

    sounds like you have a cold in here grey

  • @bigmeatyclaws7289
    @bigmeatyclaws7289 4 года назад

    if earth is square, we gonna have no problem about this cycle

  • @dylanforgaming98
    @dylanforgaming98 8 лет назад +3939

    I Think every 8000 years it should be a double leap year.

    • @All3me1
      @All3me1 8 лет назад +72

      perfect 😂😂
      love it

    • @maxv7323
      @maxv7323 7 лет назад +111

      you mean it should be a leap year since 8000 can be divided by 4.

    • @bryanlin982
      @bryanlin982 7 лет назад +72

      but 8000 can be divided by 400 so it is a leap year

    • @JonnySpec
      @JonnySpec 7 лет назад +55

      I guess depending on which way around the error is, years divisible by 8000 should either be double leap years (with 30 days in February?) or not leap years at all?
      But either way, people will cross that bridge in about 6000 years

    • @nolansprojects2840
      @nolansprojects2840 6 лет назад +24

      Yea! When I legally turn 8000 I want my leap year age to be ~2000! Lol

  • @graham_lively1732
    @graham_lively1732 6 лет назад +3889

    It would be cool to have the seasons flip - your grandparents might be like "back in my day we celebrated Christmas in the winter!"

    • @drakebalzer2098
      @drakebalzer2098 3 года назад +111

      Grandpartents would probably be dead too

    • @drodrig1
      @drodrig1 2 года назад +217

      So just the other hemisphere?

    • @lucasmt.2000
      @lucasmt.2000 2 года назад +119

      This is actually happening right now! I’m about to spend my Christmas with a cold beer in my hand and my feet on the warm sand of the beach. Just come to the south hemisphere!

    • @gaussianvector2093
      @gaussianvector2093 2 года назад +21

      @@lucasmt.2000 Have a drink for me friend down under.
      The suggestion of not attaching dates to celestial movement would be fine, but would've sounded crazy a generation or two ago.

    • @aeoe665
      @aeoe665 2 года назад +1

      Answer is no because the earths axis will change because in winter the earth is closer to the sun it will be reversed

  • @coweatsman
    @coweatsman 8 лет назад +3991

    "Xmas celebrations in summer".
    Welcome to the Southern hemisphere.

    • @kalani5559
      @kalani5559 8 лет назад +102

      Why does everything have to be upside down here? I don't like summer! I could cook an egg on a piece of tin I left outside. And at Christmas? Gah. Heat and hot food don't go well.

    • @a006delta
      @a006delta 8 лет назад +141

      "It's crazy, (points at Australia*)"

    • @eparadoxigm9648
      @eparadoxigm9648 8 лет назад +21

      +Kalani Giddey A cast iron skillet works better.
      Seriously, try it, leave the skillet out for a couple hours before hand, then right at the hottest part of the day, drop an egg in it. It works rather well.

    • @kalani5559
      @kalani5559 8 лет назад +10

      +AFGNCAAP Paradigm sure does. But it's more fun on a piece of tin.

    • @kalani5559
      @kalani5559 8 лет назад +69

      We even have a 5th season down here in Melbourne called "fuck you!" Where the weather does whatever it wants, whenever it wants. I take my jacket off and put it back on about 6 times a day

  • @LFTRnow
    @LFTRnow 7 месяцев назад +236

    Hello from 2024 (leap year) See you all again in 2028!

  • @Mr_Waffle.
    @Mr_Waffle. 11 лет назад +884

    Love the Australian christmas reference. People from the northern hemisphere are always amazed when I tell them christmas day is often celebrated out in the backyard with a BBQ and all the family around the pool/down the beach!

    • @aarons.3914
      @aarons.3914 11 лет назад +5

      Same here.

    • @coconutter24
      @coconutter24 10 лет назад +7

      Fuck yeah straya ahah! :D

    • @wurm6635
      @wurm6635 10 лет назад +10

      uhm the same thing applies to florida?

    • @heronimousbrapson863
      @heronimousbrapson863 6 лет назад +14

      MrWafu IF we did that in Canada, we'd freeze in the dark.

    • @qwertyTRiG
      @qwertyTRiG 4 года назад

      And drinking white wine in the sun?

  • @SkyWKing
    @SkyWKing 10 лет назад +2415

    I proposed a leap year system in ninth grade that can resolve all the rounding errors in 86,400 years...until my geography teacher told me the length of a day is not consistent.

    • @nitrogamer8222
      @nitrogamer8222 3 года назад +50

      What was your idea

    • @blackfalcon1324
      @blackfalcon1324 3 года назад +14

      @@vinaylalwani i thought geology was a science class

    • @Nathan-ys9vk
      @Nathan-ys9vk 3 года назад +132

      I'm in ninth grade and what kind of ninth grade are you in? The supper elite kids full of 300 iq people?

    • @johnthoppil7308
      @johnthoppil7308 3 года назад +60

      @@blackfalcon1324 geology and geography are different things

    • @ashutoshsamantaray2572
      @ashutoshsamantaray2572 3 года назад +41

      @@johnthoppil7308 for a 9th grader geology falls inside the category of geography. Same for any high schooler

  • @eparadoxigm9648
    @eparadoxigm9648 8 лет назад +707

    The universe is such a troll.

    • @薛陳月美-r6f
      @薛陳月美-r6f 6 лет назад +4

      AFGNCAAP Paradigm shrekted

    • @oni741
      @oni741 4 года назад +1

      @Quantum Paradoxigm There is no Universe, but a Multiverse.

    • @morthostalisint1720
      @morthostalisint1720 4 года назад +5

      @@oni741 A multiverse is a collection of universes. Multiverse means multiples "verses" (Basically just a big place with things) and a universe means one"verse" so having a multiverse necessitates multiple universes.

    • @oni741
      @oni741 4 года назад +1

      @@morthostalisint1720 There was no need for your "lesson" about the difference between universe 'n multiverse.. Everybody understands it with a jot of brains! However, thanks for your clarification. ;)

    • @oni741
      @oni741 3 года назад

      @@presidentialcampaignmusic1018 Exactly! I knew what he'd answer. I'm kinda a psychic lol

  • @QuilloManar
    @QuilloManar 9 лет назад +848

    Hmm... He's talking about yearly math... He made a Starcraft reference at 0:36... He used some oddly familiar symbols at 1:20... And he made a Warcraft reference at 3:04...
    CGP... Are you... Are you a... a-
    Nerd‽

    • @xuapril32
      @xuapril32 9 лет назад +62

      I apologize for replying to a comment you've probably already forgotten about, but that interrobang at the end literally just made my day. And your profile picture. Good day to you, fine sir :)

    • @QuilloManar
      @QuilloManar 9 лет назад +23

      I don't forget about comments! :3 Thanks for the compliment!

    • @links212
      @links212 9 лет назад +30

      ***** "Some oddly familiar symbols" haha :P
      also creeper at 1:41 and annotation at 2:11 and probably so many other hidden things

    • @Megacooltommydee
      @Megacooltommydee 9 лет назад +14

      DoLoyalty Damn you, CGP! You made me click on a pony video! Sarcasam aside, that was a good one, though.

    • @NDOhioan
      @NDOhioan 9 лет назад +4

      ***** No, that's ridiculous! Next thing you know, you'll be saying that bullfrogs aren't part bull.

  • @user-ju5rt6ph1o
    @user-ju5rt6ph1o 4 года назад +59

    Today is Feb 29, 2020. I'll be back in 2024 to see how old my comment is. 1 year or 4 years.

  • @AlyssaBlack13
    @AlyssaBlack13 12 лет назад +213

    I just need to share that because of this video, I have been able to explain to the elementary kids I work with how leap year works, and they were actually interested.
    Thank you for making such amazing and educational videos that are so accessible.

  • @freddiealcala2986
    @freddiealcala2986 10 лет назад +136

    I love this format. Trivia in small packets. Easy to digest and make you look forward to the next.

  • @svommams566
    @svommams566 11 лет назад +216

    What's beautiful about this is that when the pattern repeats after 400 years, there has been 365*400+97 days, which is divisible by 7, so even the the weekdays will be the same as they were 400 years prior.

    • @sunriselg
      @sunriselg 10 лет назад +8

      Do you know the the doomsday method of calculating the weekdays?

    • @heronimousbrapson863
      @heronimousbrapson863 6 лет назад +8

      svommams566 In the Julian calendar, you had to wait 700 years for the same result, I believe.

    • @meta04
      @meta04 4 года назад +6

      Tubmaster 5000: well, actually 28, but the first multiple thereof that's a century is 700

    • @MrTylerNicole1
      @MrTylerNicole1 3 года назад +11

      You’re on the right track. But in 2020, February 29 was on a Saturday, so will the years 2048 and 2076. I wouldn’t say it repeats every 400 years. It’s every 28 years unless you cross over a century not divisible by 400. In my prior example, the years 2048, 2076, 2116, 2144, 2172, and 2212 will be the same calendar.

    • @eduardoxenofonte4004
      @eduardoxenofonte4004 2 года назад +3

      @@heronimousbrapson863 in the julian calendar it was only 28 years

  • @Netsmile
    @Netsmile 8 лет назад +63

    Thumbs up for the Warcraft 3 Abomination reference at 3:04

  • @ThomasMoulden
    @ThomasMoulden 10 лет назад +245

    1:40 Creeper in the back of the car.

  • @Adventurer32
    @Adventurer32 5 лет назад +58

    Message of this not quite 4 minute long video:
    Donate to NASA to avoid your unavoidable fiery doom.

    • @BradyPostma
      @BradyPostma 4 года назад +2

      Or, rather, our distant descendants' unavoidable doom. Even if humanity or earth life or the machines into which our descendants upload their brains survive billions of years into our future, there's no way we personally are going to.

    • @iminmisery437
      @iminmisery437 3 года назад +4

      As a half brit I'm going to do what my ancestors do: just let it be your descendants problem

  • @uroupa
    @uroupa 2 года назад +24

    we all know the python course 😂

  • @Megacooltommydee
    @Megacooltommydee 9 лет назад +238

    While trying to pause the video when the word "Huzzah!" was on the screen, I discovered a neat little Easter Egg. Now I will be forever stuck with pony videos clogging up my recommended videos.

    • @Megacooltommydee
      @Megacooltommydee 9 лет назад +6

      ***** That was a joke. I know how to delete videos from my watch history.

    • @guardingdark2860
      @guardingdark2860 9 лет назад +12

      I think I'm missing something. What easter egg?

    • @Megacooltommydee
      @Megacooltommydee 9 лет назад +1

      Bel-Shamharoth Read the rest of the comments. Sorry for the 2 month late response.

    • @guardingdark2860
      @guardingdark2860 9 лет назад +1

      +Tommy Dee I got it. I normally watch with annotations off so that's why I didn't see it.

    • @BloodSprite-tan
      @BloodSprite-tan 8 лет назад

      +Tommy Dee i don't even have my history turned on what?

  • @AlexWellbelove
    @AlexWellbelove 10 лет назад +48

    Anyone notice there s a creeper hidden in most of the photos? Like at 1:34 he's in the back of the black car :)

    • @jakehorner7685
      @jakehorner7685 10 лет назад +1

      yeah I noticed that and was about to comment it

    • @davidhong1934
      @davidhong1934 10 лет назад +1

      Wait, I thought creepers hated cats?

    • @AlexWellbelove
      @AlexWellbelove 10 лет назад +6

      David Hong But dis creeper's a badass.

    • @laughingstudio
      @laughingstudio 10 лет назад

      Yeah, i noticed that too. LOL

    • @leonardgolub7660
      @leonardgolub7660 7 лет назад +1

      tssssssssssssssssssssssssssss...BOOOOOOOOOOOOOOOOOOOOOOOOOOOOM

  • @SacsachCCABP
    @SacsachCCABP 4 года назад +97

    “Christmas will be taking place in summer”
    Southern Hemisphere:

    • @FewVidsJustComments
      @FewVidsJustComments 3 года назад +3

      or phineas and ferb's world lol

    • @SacsachCCABP
      @SacsachCCABP Год назад +2

      @@FewVidsJustComments Doofenshmirtz hit this reply with a delay-inator and made the reply a year late.

    • @FewVidsJustComments
      @FewVidsJustComments Год назад

      @@SacsachCCABP ah, I see you are a fan of Phineas and Ferb as well. glad to see im not the only one who still likes it even years after it ended.

  • @thiinkiing
    @thiinkiing 8 лет назад +224

    Who's watching this on 2/29/2016

  • @kipofthemany2213
    @kipofthemany2213 7 лет назад +41

    "Unless we have a decently funded space program, hint, hint!"
    OMG YES! Thanks grey!

  • @metromortem9449
    @metromortem9449 4 года назад +19

    Thanks, youtube, for recommending this on March 1st, 2020.

  • @IONindustries627
    @IONindustries627 9 лет назад +59

    Did he just make a My Little Pony reference at 1:19?

    • @MysteryHendrik
      @MysteryHendrik 8 лет назад +11

      Yes, he did.
      And at 1:33, there’s a creeper in the background car.
      This video is full of references.

    • @raetekusu1
      @raetekusu1 8 лет назад +2

      +John Sheppard On his article about the problem with television news, one of his subheaders is "Dear Princess Celestia, I didn't learn anything!"

    • @IONindustries627
      @IONindustries627 8 лет назад +2

      Princess Molestia Thank you Molly

    • @SacsachCCABP
      @SacsachCCABP 4 года назад +1

      Yes
      My little pony I use to wonder what friendship was my little pony, until you all shared it’s magic with ME

    • @frysauce9000
      @frysauce9000 3 года назад

      @@iykury ok

  • @aerobolt256
    @aerobolt256 8 лет назад +6

    1:19 Like if you recognize what that sun and moon are from

  • @KTChamberlain
    @KTChamberlain 9 лет назад +69

    When you say few hundred years the seasons would be flipped, just out of curiosity, how many hundred years would that be?

    • @KTChamberlain
      @KTChamberlain 9 лет назад +4

      ***** thank you.

    • @puncheex2
      @puncheex2 9 лет назад +8

      ***** A quarter of a day per year moves the seasons 182 days in about 780 years.

    • @TaiFerret
      @TaiFerret 9 лет назад

      +SoloNita Technically 0 AD doesn't exist. They hadn't invented zero yet.

    • @jyothsnakonathala2935
      @jyothsnakonathala2935 9 лет назад

      +KTChamberlain Earth's axis will complete a rotation in 26,000 years. It has already completed 13,000 years. Currenty, earth 's axis is pointing towards polaris star. After 13,000 years, one rotation of axis will be completed and earth's axis will be pointed towards Vega star and our seasons will be flipped.

    • @puncheex2
      @puncheex2 9 лет назад

      Not the"Earth's axis" but rather a "precession cycle". And what is your criteria for saying we're 13,000 years into a cycle?

  • @eatnplaytoday
    @eatnplaytoday Год назад +14

    I had a client once whose birthday was on february 29th. Rare bird

  • @spongebobsucks12
    @spongebobsucks12 10 лет назад +537

    Haha future kids, have fun dealing with you fiery uavoidable doom!!! We'll be long dead!
    Love
    -Generation of 2010-2019

    • @samuelmikulasko
      @samuelmikulasko 6 лет назад +3

      Guy Fiery lives right now soooo

    • @randompesron8363
      @randompesron8363 6 лет назад +7

      Actually we are already getting close to reaching Mars, so in less than 1,000 years, we'll have most likely more than just our solar system

    • @_simon.s_
      @_simon.s_ 6 лет назад +4

      Yeah, and only the 1% of the world can go to Mars cause we're not that rich!

    • @soycoter
      @soycoter 6 лет назад

      *it's about to be 2019*

    • @drone_better7757
      @drone_better7757 6 лет назад +7

      We're approaching 2019. We live in a technologically advanced civilisation with iPhone XSs, as opposed to your puny iPhone 6s.

  • @AkaiAzul
    @AkaiAzul 6 лет назад +13

    2:50 I see what you did there.

  • @Weibaolien
    @Weibaolien 9 лет назад +17

    Ok so if i donate to NASA then I WON'T die in a fiery Apocalypse? .....but the new iphone 6s did just come out....oh well at least if i burn, i'll burn in style!

  • @datkidcomedyshow5641
    @datkidcomedyshow5641 8 лет назад +5

    232 dislikes are from mathematicians

  • @JordanBeagle
    @JordanBeagle 7 месяцев назад +17

    Wow, old cgp grey videos hit different

  • @fadibuni
    @fadibuni 2 года назад +26

    Thumbs up if you came from Angela's course!

  • @mcclips9091
    @mcclips9091 3 года назад +6

    Who Came Here From Udemy, Dr.Angela's Course

    • @Frostism
      @Frostism 3 года назад +1

      me me me me

  • @inkyscrolls5193
    @inkyscrolls5193 8 лет назад +45

    1:19 Luna is best Princess.
    2:09 Huzzah! The fun has been doubled.

    • @SacsachCCABP
      @SacsachCCABP 4 года назад +6

      IKR I just commented i know MY LITTLE PONY

    • @praritgupta5418
      @praritgupta5418 3 года назад +2

      Pls tell me the reference
      I played the video at lowest speed and still didn't saw anything

    • @scarletpachyderm
      @scarletpachyderm 3 года назад +1

      @@SacsachCCABP i dont see anything either but people are saying mlp so its probably a reference to luna, whos the moon pony iirc

    • @praritgupta5418
      @praritgupta5418 2 года назад +1

      @@scarletpachyderm I understand that too

  • @Macconator2010
    @Macconator2010 9 лет назад +13

    Lessoned learned: Give money to Nasa organisations or we're guaranteed to be fucked by our Sun. Noted.
    Already knew but still we should really get on that.

    • @theworldsquestionsbyangelc312
      @theworldsquestionsbyangelc312 8 лет назад

      Bruh that would be funny ass hell

    • @raetekusu1
      @raetekusu1 8 лет назад +1

      +Macconator2010 Did someone say "fucked by the sun?"

    • @Macconator2010
      @Macconator2010 8 лет назад

      Princess Molestia That is correct, we'll all get impaled on the Sun's massive fiery cock via the anus.

    • @slimyweasles4973
      @slimyweasles4973 8 лет назад

      +Macconator2010 That would be so hot

  • @brfisher1123
    @brfisher1123 8 лет назад +25

    I can't believe another leap year (2016) is already here! Was the last leap year (2012) already 4 years ago?

    • @MichaelSHartman
      @MichaelSHartman 6 лет назад +5

      Brandon Fisher
      Leap years coincide with campaign years giving us an additional day to be miserable, except in 2000 when we were miserable for four years.

    • @oni741
      @oni741 4 года назад +1

      @Sean Hiseman The Leap Years are always doomed. 😉

    • @doyoungod8212
      @doyoungod8212 4 года назад +1

      euewheuef it 2020 now

    • @brfisher1123
      @brfisher1123 4 года назад +2

      @@doyoungod8212 True, 2020 now makes 2016 4 years ago and 2012 8 years ago.

  • @chib1
    @chib1 12 лет назад +26

    CGP Grey, why are you the best at explaining things I never knew I was interested in? You're awesome :)

  • @fireblade696
    @fireblade696 Год назад +7

    My birthday being on leap day is so confusing

  • @zstanojevic9574
    @zstanojevic9574 4 года назад +15

    Leap second could be sly solution for ironing out imperfections of calendar+random disturbances -- provided that its ɛ remains bellow say 1/4 of a second per year (or as low as possible). Milankovich (Milanković) presented his "reformed Julian calendar" in 1923 and it has such features. It's shame that no one mentions it in their thematic videos (neither M. Parker nor Vsauce).

  • @oliviatkd9707
    @oliviatkd9707 8 лет назад +28

    CGP Grey, you make my brain hurt, but your videos are always amazing, educational, and funny! Thank you for doing your research and making important videos entertaining. You're awesome!!!

  • @whatyoulookinforlol
    @whatyoulookinforlol 4 года назад +3

    Here In 2020 (Leap Year)

  • @BothHands1
    @BothHands1 9 лет назад +10

    lol, who saw the [warcraft]** abomination in the bottom left corner? at 3:06

    • @GenkiGanbare
      @GenkiGanbare 9 лет назад

      WE DONE WAITING

    • @Bidmartinlo
      @Bidmartinlo 9 лет назад +4

      Warcraft 3. ^^

    • @ehe951
      @ehe951 9 лет назад +1

      you must construct additional pylons

    • @AnEnormousNerd
      @AnEnormousNerd 9 лет назад +3

      ...... starcraft?

    • @BothHands1
      @BothHands1 9 лет назад

      Whoops, meant warcraft. I've put hundreds of hours into both games, but I just recently got the new starcraft, so that was on my mind at the time lol. I had been living on Brood Wars for SC until now. :P

  • @brijavpogi
    @brijavpogi 3 года назад +3

    100 Days of Code challenge. Life if that's the reason you're here.

  • @jamesnixon5166
    @jamesnixon5166 4 года назад +4

    Saturday February 29th, 2020, good Leap Day to everyone.

  • @NotebookMovies
    @NotebookMovies 12 лет назад +6

    amazing!!!

  • @teavu6093
    @teavu6093 7 лет назад +9

    "Christmas in the summer?? The hell??"
    Southern Hemisphere people: -_-

  • @09_CRAZY
    @09_CRAZY 3 года назад +3

    The fact that this was uploaded on Feb. 28th and not Feb 29th, although the upload year was leap year.

  • @glennbimpeh2868
    @glennbimpeh2868 4 года назад +5

    Who’s here because it’s the 29th of February 2020😁

  • @Ghekkoo
    @Ghekkoo 12 лет назад +39

    I love your videos, there absolutely great. I was wondering tho, if you could make a video explaining this whole Kony 2012 thing. I'm sure it would be quite helpful!

  • @Missguidedgirl4
    @Missguidedgirl4 10 лет назад +18

    We have christmas in summer....

    • @Missguidedgirl4
      @Missguidedgirl4 10 лет назад

      lol

    • @Missguidedgirl4
      @Missguidedgirl4 10 лет назад

      Stupid is stupid. And now I am done with you. Blocking in action.

    • @AuroDHikoshi
      @AuroDHikoshi 10 лет назад +2

      although would be fun if you could switch every few hundred years...

  • @SparkySywer
    @SparkySywer 10 лет назад +10

    When we get the technology we should displace mass to make the length of the year precisely 364 days. 364 is divisible by 7, and 28, so division of dates won't be an issue. And since I said precisely, if we maintain this the seasons will never drift.

    • @CommieJesus
      @CommieJesus 10 лет назад +4

      And what are we gonna do with drifting days?
      Redefine hour or get some funny looking watches?

    • @SparkySywer
      @SparkySywer 10 лет назад +1

      Commie Jesus Redefine the hour.

    • @S2Tubes
      @S2Tubes 10 лет назад +4

      Let's hope no one smart enough to come up with the technology is stupid enough to try and use it.

    • @SparkySywer
      @SparkySywer 10 лет назад

      Blood Angel What's wrong with this? I think it's a good idea to do.

    • @General12th
      @General12th 10 лет назад

      xkcd's What If series covered this question pretty thoroughly here: what-if.xkcd.com/26/
      Suffice it to say, speeding up the rotation of the Earth by even a single millisecond would take hundreds of massive asteroids and probably wipe out humanity. Speeding up the Earth by an entire day would probably destroy the entire crust unless we take a couple million years to finish. Either way, the extinction of humanity probably isn't worth it.

  • @biponacci
    @biponacci 4 года назад +7

    Why does February have less days than every other month even when it’s a leap year?

    • @BadWebDiver
      @BadWebDiver 4 года назад +2

      Partly to make it balance as explained in the video; and partly because Julius and Augustus Caesar were egotistical prats.

    • @alecpi150
      @alecpi150 4 года назад +2

      Because for the Romans it was an important month (purification) and when Caesar decided to change the calendar from a lunar one(28 days per month) to a solar one(30 days per month but adding 1 day more to some months) he decided to let february with 28 and use it as the month where a day would be added in leap years(they already added days to keep in sync with the seasons, the problem was that it wasnt something automatic but the job of the Pontifex Maximus (Caesar all that time) but if for some years he wasnt able to do so (like in the Roman civil war) then all the calendar went downhill very quickly

  • @danielperez3175
    @danielperez3175 10 лет назад +8

    Has anyone noticed the creepers like at 1:36?!?!?

  • @9adam4
    @9adam4 3 года назад +18

    For my D&D game we use a lunisolar calendar that always starts the month over on the first day of the full moon, and the year starts over on the first full moon following the winter solstice.

  • @trynt_xasan
    @trynt_xasan 3 года назад +2

    RUclips: lets recommend this at 11:15pm on February, 28th :)

  • @Phazon8058MS
    @Phazon8058MS 10 лет назад +5

    AGRICULTURAL REVOLUTION ON CRASH COURSE! HAHA! I have no clue why I find that so exciting.

  • @lilspirit6270
    @lilspirit6270 8 лет назад +18

    Tomorrow is leap day!

    • @markrobinson3306
      @markrobinson3306 8 лет назад

      +RainTeamTrain I am, still none the wiser, Happy Leap Year Day

  • @pleb3661
    @pleb3661 8 лет назад +8

    Alright before i watch the video, ima say what others have told me, even though it is very likely *wrong*.
    *a leap year adds and extra day because every year is not 365 days, but 365.25 days. so that means that every four years it would add up to 367 days.*

    • @pleb3661
      @pleb3661 8 лет назад +2

      Sorry, 366 i mean

    • @michaellol9163
      @michaellol9163 8 лет назад

      +Seteiris It might be 366.25 days

    • @SmOllie00
      @SmOllie00 8 лет назад +8

      Sorry to correct, but to be even more precise, it's 365,24, and then even more numbers. This comment is not supposed to be offensive or rude, but to help others.

    • @pleb3661
      @pleb3661 8 лет назад +2

      Thanks for the correction :D

  • @stevesibaja3123
    @stevesibaja3123 4 года назад +2

    9 days away for Leap Day 2020

  • @darkwraith100
    @darkwraith100 10 лет назад +11

    1:20 cutie marks?

  • @jayolusola754
    @jayolusola754 2 года назад +3

    Here cause of miss angela

  • @faisal-ev8vs
    @faisal-ev8vs 2 года назад +4

    hi future programmers

  • @stillchillin9518
    @stillchillin9518 4 года назад +1

    Meant to comment yesterday on February 29 but I fell asleep now it’s March 1

  • @Shadow0mori
    @Shadow0mori 9 лет назад +6

    "1 2 skip a few 99 100!" -Yacko, Animaniacs

  • @TheGreyDaisy
    @TheGreyDaisy 12 лет назад +13

    Something as complicated as a leap year definitely needed an explanation! Thank you so much!

    • @moothecow6908
      @moothecow6908 2 года назад

      You think secular leap years are complicated, look at Jewish leap years, just a whole extra month added at what seems like random intervals

  • @gamer4370
    @gamer4370 10 лет назад +4

    Protoss!!!
    Yussssss!
    Like if you know what I'm talking about.

  • @jana31415
    @jana31415 5 лет назад +1

    Why not a calander wich is based on some distant constant and light speed, every time light passes this constant one time passes by.
    And as an extra the time of the day .
    Means after x hours its the date 9342.582 16:43

  • @Zeus-kf9lb
    @Zeus-kf9lb 2 года назад +3

    ANGELA YU send me here to watch your video

  • @eliegbert8121
    @eliegbert8121 5 лет назад +5

    3:12 China's giant hydroelectric dam must've had NOOOOTHING to do with that...

    • @samd2612
      @samd2612 3 года назад

      Huh?

    • @eliegbert8121
      @eliegbert8121 3 года назад +1

      @@samd2612 china made a really large hydroelectric dam which stopped the flow of a relaly big river which slowed the rotation of the earth by a few milleseconds

  • @theBarefoot
    @theBarefoot 12 лет назад +7

    I've always been a fan of the 28-day month, 13-month per year calendar, with a 5 (or 6 for leap year) day new-year's holiday. This calendar also moves the beginning of the year back where it should be, the Vernal Equinox.

  • @Pearguy346
    @Pearguy346 4 года назад +2

    Coolio, maybe I'll come back in the next 4 years from now and see this comment again, probably not...

  • @feynstein1004
    @feynstein1004 2 года назад +3

    2:57 Well, no. The calendar drift has nothing to do with our measurement techniques. It's not a technological problem that you can science your way out of. As long as humans are living on earth, we will have to deal with it. And so leap years will continue to exist.

  • @EmergentSea1
    @EmergentSea1 10 лет назад +8

    I love the tiny references, like the abomination from Warcraft 3 :D

    • @ducomors
      @ducomors 10 лет назад +2

      i literally just noticed that and was finding the comment on it

    • @evanbarrie4630
      @evanbarrie4630 9 лет назад

      CREEEPER!

    • @evanbarrie4630
      @evanbarrie4630 9 лет назад

      Evan Barrie at 1:41

  • @forfluf
    @forfluf 10 лет назад +8

    Why can't we have one calendar for every year?
    Hear me out!
    Just have the last day of the year last longer and even if you use the leap year system have the extra day at the end of the year instead of February. Then make January 1st start on a Thursday every year regardless of what day of the week the year ended. Why Thursday, so we can have a long new years holiday and back to work come Monday.

    • @TheSmashinPumpkins
      @TheSmashinPumpkins 10 лет назад

      because living one 30 hour day wouldn't be ideal

    • @jackrussel13
      @jackrussel13 10 лет назад +4

      A day is 24 hours long because that's the time it takes to make one rotation. If the last day is made 30 hours long, it might help keep the seasons in sync, but your day/night cycle will keep getting shifted by 6 hours each year before it syncs again after 4 years.... hope I am making sense... :)

    • @forfluf
      @forfluf 10 лет назад +1

      jackrussel13
      Take away making the last day longer part.
      Just put the leap days at the end of the year and start the year on the same weekday is still a good idea.

    • @martijnvanweele6204
      @martijnvanweele6204 10 лет назад +1

      For the Romans, the founders of our chalendar, the year originally ended with February (count it, September was originally the seventh month (septem = seven), October the eigth (octo = eight), November the ninth (novem = nine), and December the tenth (decim = ten)). So the leap day actually was added at the end of the year. The calendar was shifted because of the roman law, that said that gouvernors of all areas of the Roman empire (back then not yet an empire) had to come to Rome to account for their actions (and also elections, I think). The chalendar was shifted to make it easier for the gouvernors to travel. The Mare Internum isn't a place you want to be in the middle of around end February-begin March, it's stormy and dangerous. December on the other hand, gives you a relatively calm sea to sail on. This change in chalendar was just Roman problem-solving.

    • @Arkalius80
      @Arkalius80 10 лет назад

      There is a proposal that's been floating around for awhile that is similar to this. It is called the World Calendar. It is set up so that each quarter year, the first month has 31 days, and the other two 30 days. In the middle of the year, between June and July, there would be a day with no numerical date or month, which isn't part of any week, called "World's Day". On years where we need a leap day, you add another similar "World's Day" to the end of the year. The benefit of this calendar is that every particular date always falls on the same day of the week, every month always starts on a particular day of the week etc. Of course, a lot of people don't like the idea of having days that aren't part of a week, it can screw up a lot of things, so the idea hasn't really caught on.

  • @tomcampbell4901
    @tomcampbell4901 3 года назад +2

    Ask Julius Caesar

  • @blodstainer
    @blodstainer 10 лет назад +5

    Warcraft Abomination at 03:04

    • @LuftWaffles1337
      @LuftWaffles1337 10 лет назад

      Pudge?

    • @blodstainer
      @blodstainer 10 лет назад

      Carl Lindberg *Timmeeeyyy*
      I seriously don't recall if Pudge was from Wow or WC3

    • @Sigskogi
      @Sigskogi 10 лет назад +1

      And part of the Starcraft 1 UI at 0:37 lol. That is the abomination from WC3 btw.

    • @jamesroyahmaogak4882
      @jamesroyahmaogak4882 10 лет назад

      Bloodstainer
      The original Pudge is from WC3 I believe. I don't know if WoW even have any DLCs

    • @blodstainer
      @blodstainer 10 лет назад

      James Roy Ahmaogak TBC, Wotlk, Cata, MoP? Learn the definition of DLC.

  • @Queenside_Rook
    @Queenside_Rook 10 лет назад +5

    I'm surprised I caught the Warcraft abomination

  • @victory4454
    @victory4454 4 года назад +4

    Leap day 2020 yay!

  • @truckjumperdude
    @truckjumperdude 2 года назад +2

    why didn't you upload this on 29 February...

  • @Kirillow
    @Kirillow 8 лет назад +4

    haha I never knew about that crazy rules. I knew why there is a leap year but I really though they just left it at that :) God damn calendar designers, I have much more respect for them now.