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How Often Does Thanksgiving Fall on November 22?

English: "The First Thanksgiving at Plymo...

This year my birthday falls on Thanksgiving. It doesn’t happen very often, but when it does it’s kinda fun. I was asked how often it happens, and of course I had to think about it. My first thought was every 7 years (a number I came up with in my youth), but now I’m interested in being more accurate. As a youth I got the general range correct, but forgot about leap year.

So, it really is hard to gauge at first glance. Here’s why. It follows a definite pattern up until leap year. Then all bets are off. According to one site I visited, Thanksgiving falls on November 22 an “average” of every 11 years.

That number seemed questionable to me even though it was “voted” the best answer. So, I kept looking (and calculating).

Here’s the basic pattern. Thanksgiving is on the fourth Thursday in November, and not on a specific date like New Years or Independence Day. These dates range between November 22nd and November 28th. So, my birthday is the earliest possible date for Thanksgiving.

In 2009 Thanksgiving was on the 26th. In 2010 it was the 25th, and in 2011 it was on the 24th. Whoops – 2012 is a leap year, so it skipped the 23rd and goes straight to the 22nd. Ah, now we’re seeing a bit of a pattern. The range is every 7 years, but since leap years occur every 4, we can never be completely in synch.

Assuming that all of the possible dates can fall in a leap year, that means the pattern is something like 1-2-3-skip, but over a sample of 7 possible dates, it’s hard to mentally track. However, If you look at actual dates and the use a calculator, a day will actually only be skipped approximately every 28 years. But, in between, it will occur 3-4 times, depending on the start and end dates of those 28 years.

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Which means (again, approximately) my birthday will fall on Thanksgiving an average of every 7 years.

Here’s what my future Thanksgiving birthdays looks like: 2012, 2018, 2029, 2035, 2040, 2046, 2057, 2063, 2068, 2074, 2085, 2091, 2096. The pattern of years between is 6,11,6,5,6,11,6,5,6,11,6,5 and so on. Add up 6+11+6+5, and you get 28. Divide by 4 = 7. On average. So, while I was correct about the number 7 as a youth, I did not realize that I could not just add 7 to this year’s date to get the next one.

Now, the other “milestone” that happens on my birthday, that I really don’t like, is that it is the anniversary of John Kennedy’s assassination. But, that’s a story for another post.

Regardless – happy birthday to me, and Happy Thanksgiving to all of you.

 

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Comments

    • Sparkle555_2000
    • December 10, 2013
    Reply

    What Happens To Your Salary In A Leap Year? Someone mentioned that next year will be a leap year, and that got me thinking, what happens to your salary during a leap year?
    If you have to work on February 29th (eg if it falls on a week-day rather than a weekend), are you paid for it? It shouldn’t be a problem for people who are paid hourly, but what about people who are paid a monthly salary?

    View Comment
      • Admin
      • December 10, 2013
      Reply

      Your salary is as stated per annum. There’s no definition in that context of how many days a year consists of, it’s just a year. No extra, I’m afraid!

      View Comment
    • Paul F
    • December 18, 2013
    Reply

    If You Were Born On February 29 (a Leap Year) Do You Celebrate Your Birthday Every 4 Years? Will a person born on February 29 (a leap year) celebrate their birthday every 4 years, since the 29 of February only comes around every 4 years? … If not, when do they celebrate their birthday in the intervening years?…Gotcha!

    View Comment
      • Admin
      • December 18, 2013
      Reply

      Usually what they do is celebrate it either on the 28th or the 1st of March. I think every four years it’s just a treat.

      View Comment
    • Katalin
    • December 24, 2013
    Reply

    What Kind Of Peyote Stitch Do You Use For Making A Twisted Earring? http://trianglebeadsociety.com/Portals/TriangleBeadSociety/UltraPhotoGallery/5261/79/large/Peyote-twist-in-progress.jpg

    I am talking about the one above. I thought it would be the diagonal stitch but I am not sure. A pattern would be helpful but could not find any online.

    Thanks!!

    View Comment
      • Admin
      • December 24, 2013
      Reply

      The images you included with your question are appearing on many pinboards, a definite sign the item is well liked. Looking closely, everything seems to lay flat until you ‘zip’ the peyote stitch beading so the shape twists into itself. With so much interest, guess it will be a while before the pattern is shared for less than the twelve dollars the earring creator has posted with these images. Various names are also appearing with these beaded earring images.

      Peyote Twisted Stitch
      Twisted Peyote Stitch
      Twisted Tubular Peyote Stitch

      http://www.junipercreekdesigns.com/default_files/Page3720.htm

      Could not resist including some other intriguing dimensional beading designs data. Have not personally done beading design work but have artist acquaintances who are recognized leaders in the field, with published books and patterns.

      http://beadwork.about.com/library/weekly/aa081897.htm
      http://beadwork.about.com/od/beadingstitchtutorials/ss/Twisted_Tubular_Herringbone.htm

      http://beadwork.about.com/od/beadednecklaces/tp/Twisted-Tubular-Herringbone-Blue-Spiral.htm

      http://www.paulettebaron.com/workshops-i-3.html
      http://www.splashofcolordesigns.com/taxonomy/term/25

      View Comment
    • Bob
    • December 29, 2013
    Reply

    What If Someone???s Birthday Is On Leap Year? Leap year is this year and February 29th is my friend???s birthday. How does he celebrate his birthday? He was 27 4 years ago during leap year so does this mean he is really only 28 and missed 4 years of his birthday or does February 28th count as his birthday or would it be March 1st? Which is it? Is he really going to be 31?

    Also, would the Driver???s License center really put February 29th for his birthday? If February 29th is only every 4 years, then how is his birthday celebrated?

    View Comment
      • Admin
      • December 29, 2013
      Reply

      The person’s driver’s license or state ID would show the proper birthdate. The person would have the option of choosing what day to celebrate their birthday on every year that is not leap year. My sister was born on February 29th, her state ID states that her birthdate is February 29th. She usually celebrates her birthday on March 1st because a lot of my siblings were born in February and she feels that celebrating in March makes her unique. She really is considered her proper age, not just her age divided by four.

      View Comment
    • YoMama
    • January 2, 2014
    Reply

    What Is My Proper Due Date With The Leap Year? I am due July 5th of next year. And its a leap year. So how do I figure out my correct due date. I’ve hear, Add one day. Add two days, subtract 1 day, subtract 2 days. What is correct?
    I have not seen a doctor yet so no they have not given me that date. And when I called and asked they said they didnt know.

    View Comment
    1. Reply

      Congratulations.I am also due July 5th, and I really think that’s what my doctor will tell me, but generally it doesn’t matter because it’s almost impossible to give birth on your due date, you may give birth a few days earlier or later. my 1st came 1 week earlier, and my 2nd 2 weeks earlier.

      View Comment
    • Emily F
    • January 21, 2014
    Reply

    What Happen If Have Leap Years Every Year Instead Of Every Four Years? If we have leap years every years instead have every four years I wonder what happen what if?

    View Comment
    1. Reply

      Summer would eventually be in December for the northern hemisphere.

      Leap years are required because the earth takes 365.25 (roughly) days to go around the sun. If we ADDED a day every year, then the calendar wouldn’t match up very well with our accustomed seasons.

      View Comment
    • Chaun
    • February 5, 2014
    Reply

    Does The Leap Year Go Make Us Go Offbeat? Like say the position of earth cycling around the sun it’s at the same position when the year is over…I think
    And it stays like that for a few years til leap year then the ending position is a little past that and it just keeps happening

    View Comment
    1. Reply

      Actually, leap years were invented to keep us in check with Earth’s motion around the Sun…more or less.

      Ancient farmers had to know when to plant their crops in order to take the best advantage of the seasonal temperature and precipitation. They knew that the seasons repeated themselves approximately every 365 days, but it wasn’t exact. If you planted your crops every 365 days exactly, you would get further and further out of whack with the seasons. At first it wouldn’t matter much, but after a couple of decades you’d be planting your crops too early, which means you’d miss the advantageous rainy season or whatever other relatively reliable climate-driven phenomenon you needed in order to make your crops fruitful.

      Early civilizations had many methods for lining up their accounting of days with the motions of the Sun. The concept of a leap year is just one solution (and the one we currently use). Astronomers noticed that the year was about one-quarter of a day over 365 days, so if we continued to count years as being exactly 365 days long, then every four years we’d be another day ahead of the proper Sun-related date. So every four years we add another day to the calendar in order to bring our accounting of days into sync with the seasons.

      But as it turns out, it’s not EXACTLY 365.25 days to a year. It’s close enough to keep us tied up with the proper date for a while, but even then we’d eventually be out of sync again. To correct for this discrepancy, we skip a leap year every 100 years. So the year 2096 will be a leap year, and 2104 will be a leap year, but 2100 will not be.

      But wait a minute, you say: I’m pretty sure the year 2000 WAS a leap year…and you’d be right. Skipping a leap year every 100 years doesn’t exactly line us up, so when a year is divisible by 400, we DO have a leap year. That’s why 2000 was a leap year. The next century year that’s also a leap year will be 2400, then 2800.

      And that’s not all. Earth’s rotation isn’t constant. Complex gravitational interactions with the Moon and Sun mean that the length of Earth’s day is increasing, albeit slowly. Also, Earth’s orbit changes shape over tens of thousands of years, which means that the length of the year also changes periodically. All of this means that there is no long-term calendar that is going to be accurate into perpetuity…we just do the best with what we have and make changes as needed.

      I hope that helps. Good luck!

      View Comment
    • Enriçø ψ Lüççione
    • February 8, 2014
    Reply

    If You Dont Receive Compassion/love In Your Early Life, Do You Become Cruel/full Of Hatred? And vice versa? or is it the opposite [you receive compassion you become compassionate, and vice versa]?

    or is there no actual pattern?

    View Comment
    1. Reply

      There is no definite pattern. What the factor is, is HOW the person handles each situation life throws at them. Life is not a result of occurrences, but rather a result of your reactions.

      View Comment
    • Jessica S
    • February 13, 2014
    Reply

    How Do I Answer This? In the sequence 2001, 2002, 2003,… each term after the third is found by subtracting the previous term from the sum of the two preceding terms. The fourth term would be 2001+2002-2003=2000. What is the 2005th term? And I have to show my work for this.
    Thank you for your help

    View Comment
      • Admin
      • February 13, 2014
      Reply

      If you continue the pattern the 5th term is 2005, the 6th term is 1998, the 7th term is 2007, and the 8th term is 1996
      So, we can see that there is a definite pattern here. For each odd term the term is added to 2000 to get the number. For example, the 5th term is 2005, which is 2000 + 5.
      Therefore, the 2005th term will be 2000+2005 = 4005

      View Comment
    • Chase
    • March 1, 2014
    Reply

    If Pi Is Infinite, How Can Its Numbers Never Repeat? The constant Pi is the ratio of a circle’s circumference to its diameter and is believed to be infinite, where its numbers never end and never repeat. My question is, how can that be? If it’s never ending, how can it also never repeat itself? Those two seem contradictory.

    Also, what is considered not repeating? For example, Pi starts out as 3.14159, does that mean no where in Pi’s string of digits can I find 141?

    View Comment
    1. Reply

      The WILL repeat, but that doesn’t matter: they do not follow a pattern and that is where the never repeat itself comes from: there is no sequence of numbers that will repeat following a definite pattern.

      An example of something that repeats itself would be a rational number like 1/3 = 0.333333333333……

      View Comment
    • Laro
    • March 25, 2014
    Reply

    What Year Is The Next Leap Year?

    View Comment
    1. Reply

      2012! Leap year comes every four years. The last one was in 2008. I was born on leap year so I’m happy my birthday is coming up this next year. Then I have to wait four more years until 2016.

      But the next soonest leap year is 2012. ?

      View Comment
    • Enriçø ψ Lüççione
    • March 26, 2014
    Reply

    If You Dont Receive Compassion/love In Your Early Life, Do You Become Cruel/full Of Hatred? And vice versa? or is it the opposite [you receive compassion you become compassionate, and vice versa]?

    or is there no actual pattern?

    View Comment
    1. Reply

      There is no definite pattern. What the factor is, is HOW the person handles each situation life throws at them. Life is not a result of occurrences, but rather a result of your reactions.

      View Comment
    • Anonymous
    • April 6, 2014
    Reply

    Anybody Else Notice How Strongly Conservatives Defend People Who Say Bigoted Statements On The Airwaves? They defended Dr. Laura for spewing the n-word to a minority and then claiming if she didn’t like it to not ‘marry out of her race’

    Now they’re defending Williams for his ignorant statements.

    Anybody else seeing a pattern?

    View Comment
    1. Reply

      Don’t forget that brilliant sack of something Don Imus.

      Yes, there is a definite pattern. Those right wingers sure now how to debase and provoke someone and then hide behind the first amendment.

      View Comment
    • Teknooldskool
    • April 8, 2014
    Reply

    Question About The Sum Of Most Powerball Jackpots And A Certain Pattern I Noticed? Hello people I know the Powerball is random and nearly impossible to win ,and the odds are like 1 in 100 million.While i know its random i have noticed a pattern(which could help your chances) basically whats going on is the drawings either winning or loosing drawings the numbers never have any denominators,no divisible s and you do not see many numbers in the same group,and you do not see many numbers run consecutively,

    you see none of this

    56789
    5,10,15,25,35
    7,14,28,35,42
    or 1,7,9,4,2
    or 1,3,5,7,9

    so you get what im saying there is a definite pattern just look at the last few draws and youll see that most of the 5 numbers drawn and the powerball # do not make any sense together.

    so now to my question are most draws high sums or low sums?

    cause once you narrow down the pattern you can pretty much cancel out numbers that dont usually hit then play a large sum or low sum, so people let me know is it mostly large numbers lower numbers or is it 50-50 either way?

    View Comment
    1. Reply

      All the draws are high sums, the lowest Jackpot there could ever be in Powerball because it’s where they start off from after a win is $40 million (Annuity) and if the government as well as taxes takes half of that lets say then you have $20 million dollars. That sounds pretty high to me, most will work 4-5 decades and not come close to earning that number. With that said the last 10 jackpots 4 of them were over $100 million in cash value and the lowest Jackpot in cash value was $37,059,913.53. As far as the Powerball numbers goes there is no pattern or any way to figure out a pattern, the drawing is completely random every time and numbers that haven’t matched in 25 drawings have the exact same chance of coming up as numbers that have come up in the last 5 drawings. In the last 20 drawings the Powerball number which is the last one drawn has been 18 different numbers. In the last 3 drawings the 5 regular numbers have all been different. Anyway there are so many numbers and so many possible combinations there is no pattern to the numbers at all.

      View Comment
    • Precious1982
    • May 6, 2014
    Reply

    What Is The Meaning Of Leap Year Being Every 4 Years? Why have one? I was just sitting in my room and leap year came to mind and was wondering what the meaning of having an extra day every 4 years… Who invented it?
    Why have one? I was just sitting in my boyfriends room and leap year came to mind and was wondering what the meaning of having an extra day every 4 years… Who invented it?

    View Comment
    1. Reply

      Leap year happens because the Earth doesn’t take exactly 365 days to orbit the sun, but instead very close to 365.25 days. Every four years, an extra day is inserted to keep the seasons in position. If we didn’t, the seasons would creep backwards through the year. That adjustment is also not perfect, so century years not divisible by 400 are not leap years. Leap years were first instituted by Julius Caesar in 45 BCE, and the astronomer Sosigenes of Alexandria helped him invent it.

      View Comment
    • Chocolate
    • May 18, 2014
    Reply

    Leap Year? What is the story behind leap year and is 2007 considered a leap year? From what I have heard it happens every four years, but I can’t remember when the last leap year was. I know it deals with the month of February. How many days in February does it have to be to be considered a leap year? There are 29 days this year in the month of February. What is special about leap year? I also know that during a leap year, there are 365 1/4 days in the whole year.

    View Comment
    1. Reply

      You’ve got things a little mixed up.

      Each year is 365 1/4 days long, which is why we need a leap year every four years–because we’ve actually used an extra day during that time and our calendars are ‘behind’.

      February usually has 28 days. This year it only has 28 days. Next year is our leap year. What calendar are you looking at that it has 29 days for February?

      Our last leap year was 2004. The next one will be next year. It’s always a year that is divisible by 4.

      Now, because adding this extra year actually ends up giving us more days in the long run (because it’s not EXACTLY 365 1/4 days per year), they decided that any year ending in 00 would only be a leap year if it could also have to be divisible by 400.

      You can read more here:
      http://en.wikipedia.org/wiki/Leap_year

      View Comment
    • Mimi ❤ Gellert Grindelwald
    • May 23, 2014
    Reply

    Does The Anything In This World Make Any Sense To You? Me: no

    I believe this world is a complete nonsense, whatever is going on right now in the world is utterly nonsense

    View Comment
    1. Reply

      There are definite patterns in the world around us, but even if you get a doctorate in philosophy you couldn’t be able to figure it all out. Basically- this universe is completely crazy.

      View Comment
    • Amy
    • June 2, 2014
    Reply

    Is A Period That Only Goes For 2 Days Normal? I was diagnosed with an eating disorder a bit over a month ago (Eating Disorder not otherwise specified) because I didn’t fit the criteria fully for Anorexia. I’m still within the healthy weight range despite substantial weight loss. I’ve never had my period go for this short amount of time before except for 2 years ago when I had a bit of exercise bulimia and was compulsively exercising. But the funny thing is that I have been going well nutritionally with the help of my dietician/psychologist for the past month. Should I ask my dietician about this? I’m not sure if 2 days counts as a normal period or not…..?
    Also, I haven’t lost too much weight over the past month since I was diagnosed. Only about 3 kg since my 7 kg weight loss. My BMI is still however normal at 21.

    View Comment
    1. Reply

      If its still a couple years old, you wont have a definite pattern.

      View Comment

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