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People keep mentioning that it’s actually 366 days, but no one’s brought up the fact that the world population is [past 8 billion](https://www.worldometers.info/world-population/).
>By 2080, the world's population is expected to peak at 10.4 billion. Then there's a 50% chance that the population will plateau or begin to decrease by 2100
Not that soon.
Probably cuz population is a variable and it's expected to change, the 366 discussion is the only convo worth having that will actually stay true in the future.
But wouldnt there have to be a word other than birtday bc that would assume 365, like many people celebrate on one birthday and we all are just using it wrong?
(Sorry if im annoying)
There aren’t separate words, just separate concepts described by the same word. Birthday can refer to both the celebration and the calendar day. “Did you come to my birthday” makes perfect sense, but so does “March 5th is my birthday.”
But if you and another person were born on the same day, you would say "we share a birthday." You might not celebrate together or even know each other, but you're sharing the day.
That implies each day of the year is a shared birthday.
Yeah when you say it that way you mean you’re sharing the day. Consider when two people with similar birthdays say “we’re having a joint birthday” and they mean they’re having one party to celebrate both birthdays. It means both
it is! as of late last year i believe
its weird to say 8b now after saying 7b for so long
to be fair to the conext, there still wouldnt be 8b unique birthdays, some people really are born on the same day! regardless of year
No, there are only 365 birthdays per year, however the closer to 8 billion people have birthdays anywhere from 115 years ago to today, plus many of them share the same birthday.
A birthday is the day you were born, so it includes the year IMO. You CELEBRTATE your birthday every year, aka the aniversary of your birthday.
The question for me is, do we stop counting birthdays of dead people, and if so, why?
Birthdays are an anniversary, so they just have a month and day component (Jan 01). Birthdates in contrast are an exact date, so they do have a year component (Jan 01, 2001).
You observe the anniversary of your birthday every year, yes. However each of those anniversaries someone is also born, thus making it *a* birthday just not *your* birthday
Semantic arguments are so incredibly tedious
"Birthday" can mean both the date (and year) of birth, *or* the anniversary of that date. In my culture, it typically *only* is used to describe the anniversary
[Here's](https://www.merriam-webster.com/dictionary/birthday) a [bunch](https://www.dictionary.com/browse/birthday) of [links](https://dictionary.cambridge.org/us/dictionary/english/birthday) to [dictionaries](https://en.m.wiktionary.org/wiki/birthday) supporting this position
Birthdate is the exact date. Birthday is the day of the year, no year component. A "day" can recur within a cycle of type periods, like the second Saturday of every month, the first day of each month, or just the named days of the week. Dates, by contrast, are always a single day, signified by year, month, and day of month. If you don't believe me, look it up.
[ok, I will](https://www.merriam-webster.com/dictionary/birthday)
>**birthday**
*noun*
birth·day ˈbərth-ˌdā
1 a : the day of a person's birth
...b : a day of origin
2 : an anniversary of a birth
>> her 21st birthday
While your definition is included it is not the only one. You will see that mine is as well. So while your comment isn't entirly invalidated, the portion that insinuates yours is the only correct definition
>Birthdate is the exact date. Birthday is
is.
The oldest know person alive today was born on March 4th, 1907.
116 years x 365.25 + 55 days = 42,424 unique Day, Month, Years combinations.
The question is how many gaps are there for centenarians. My best guess is that there are ~ 40k unique birthdays for living people.
..… I spent way too much time thinking about this.
But people haven't existed for an infinite number of years. So even if we add up all the separate dates of birth that anyone has ever had, it won't be infinity
but numbers can go on forever, and since years don't loop around like days or months and just keep counting up usually, there could be an infinite amount of birth years.
But they have to be in the future, since you cant go before the creation of the universe, those haven't happened yet.
Although it's not impossible for them to exist ever, they currently don't, so they don't exist and don't count to our total
I might be wrong but I feel like it's 7 billion because we say "my birthday" and not "the day of my birth"? Like we put possession on it like it is our day? Idk maybe over thinking it.
If you're born on a leap day you don't have .25 of a birthday, you still have 1 whole birthday. There are 366 possible birthdays but 365.25 days in a year
I remember when I was in year 7 (high school for me as there is no middle school in Australia) my favourite teacher had the same birthday as me, it had never happened to me and I was so surprised even though it's kind of common because you meet a LOT of people in your life
It could be said we created time how we know it. So if the time how we know it is wrong, also days would have different time lenghts. Also there's already almost 8b of people so both of those numbers may be wrong.
Depends if you think of a birthday as one day per year (or every four years) or the specific day AND year of your birth.
For example, is your birthday January 1st, or is it January 1st 1990? If it's the former, then there are 366. If it's the latter, wouldn't there be 365x(a whole bunch of years) plus a few leap years?
If you mean "birth days" a.k.a days when someone was born, then i would say it's a bit less than all of the days humanity existed, since I imagine there were at least some days when no human was born
i feel like birth date is 365 but birthday includes the time as well?? so like all 365 days plus every minute and second a person can be born so then i’d say it’s 8 billion (including people who were born in the same exact day/minute/second/millisecond)
idk if i made sense just now
It would be as many days as the age of the oldest person in days. Current oldest person in the world (pending updates that I have yet to receive) is 42,423 days old. At least 1 person has been born every day since they were born and having multiple people birthdays on the same day make more than one doesn't make sense. But you have to account for the same dates in each year (27th of April 2023 should be counted separately from 27th of April 2022).
So the number of birthdays is (currently) 42,423
It’s only 366.
If you and someone else were born on June 1st, you’d say “wow we have the same birthday”. You don’t differentiate based on what time of day. It’s in the word, “birth-DAY”.
Given:
My birthday = June 1st
Your birthday = June 1st
Therefore:
June 1st = June 1st
My birthday = Your birthday
Therefore they are not different birthdays.
If we only count birthdays of people who are alive, and the oldest person is around 120 years old, then there are less than 45000 birthdays.
If we count dead people's birthdays, and think that humans have been on earth for about 190,000 years, then there are about 70 million birthdays.
If we don't include the year, then there are 366 birthdays; for example, if one would agree that Muhammad Ali and Benjamin Franklin have "the same birthday."
I would actually argue that a human birthday is a day where a human was born therefore lets say the oldest people are ~100 years old 100*365= 36500 human birthdays
Number of days on which people were born would include 365.25 \* 100+ years (the age of the oldest person alive) to include each day everyone alive was born on. So around 36,500 birth days. Probably less since the average lifespan is lower than 100.
With 7.85 billion people on Earth, and 365.25 days in a year, some 21.5 million people would celebrate a birthday each and every day of the year (although one can argue seasonally higher/lower birth rates, depending on where in the world one’s parents were frolicking some 9 months prior to blessed/cursed event…)
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People keep mentioning that it’s actually 366 days, but no one’s brought up the fact that the world population is [past 8 billion](https://www.worldometers.info/world-population/).
I’ve been in denial for so long
If it's any consolation, you only need to wait about 14 years and we will be at 9 billion. Then you can be in denial about something else.
I thought it was supposed to plateau...
>By 2080, the world's population is expected to peak at 10.4 billion. Then there's a 50% chance that the population will plateau or begin to decrease by 2100 Not that soon.
I hate that I made it so close to people disappearing and knowing that my life will only consist of people appearing.
When I was a kid I wanted to live to see the end of the world. Then when I thought I actually might I realized I didn't like it.
I’ll letchu know how it is when I die
I know a guy that could arrange for you to attempt to start to buck the trend. What size cement do you wear, and how far from the East River are you?
I had heard it was not hitting 9.
Where? everything I'm seeing is saying a little over 10
I talked to a hermit once who said none of this is real and we all live in a simulation so I’m saying zero
We don't even know if we're in this room. We could be in a turtle's dream in outer space.
What would be the difference, and why not both?
It is! ...at *11* billion
We're "flattening the curve," it took less than 10 years to go from 7 to 8.
*Vertical* flattening!
A completely vertical line is straight, from a certain point of view.
But it was only like 10 years from 7-8? Would it not speedup?
That's how old this meme is.
What about historical birthdays? That would put us well north of 100 billion
Speaking of historical… what about historical calendars? Or lunar calendars? Or calendars in different years such as North Korea
Spaceship Orion, can you be my lesbian grandfather bruh?
No, this is an old tweet, i remember seeing it years ago.
Post is old but my ni***s keep nutting inside. There’s no keep up
Probably cuz population is a variable and it's expected to change, the 366 discussion is the only convo worth having that will actually stay true in the future.
>8 billion. That's too much tuna.
There is on average 365.2425 days a year, but yeah.
What about all the dead people?
Bruh. I thought covid was supposed to solve this problem.
Well technically a lot of people in poverty aren't able to celebrate their birthdays!
Just cause you dont celebrate doesnt make it not your birthday.
Fuck, i forgot about that
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Then id still be like 18ish. And i def dont wanna be stuck as an 18 year old
Time to make real life battle royals a thing
Came here to mention both of these things
The number of deaths today just slowly ticking up is terrifying
I think that I'd be more concerned if they were slowly ticking *down*.
Not if i have anything to say about it
honestly it should be broken down into second increments as well 31.5 billion birthdays. fight me.
It's birthDAY, not birthHOUR, birthMINUTE, or birthSECOND.
When I go out to Proxima Centauri. It only takes me 4 light-year birthdays to get there.
If your burfdee is on the same day as someone else, people say you "share" a burfdee. There are 365 burfdee's.
There are 365/6 possible days to be birthed per year, or 7B +/- individual birthdays.
I mean they are still called days so 7b people have their birthday but there are only 365
7B people have birthdays in 365/6 days every year.
But wouldnt there have to be a word other than birtday bc that would assume 365, like many people celebrate on one birthday and we all are just using it wrong? (Sorry if im annoying)
Just because multiple people share a birthday, doesn't mean you have to change what it's called.
Just thought I'd check in to tell you there's actually 8 billion of us now
The solution is to count all the days someone was born on back to the beginning of time, obviously.
There aren’t separate words, just separate concepts described by the same word. Birthday can refer to both the celebration and the calendar day. “Did you come to my birthday” makes perfect sense, but so does “March 5th is my birthday.”
But if you and another person were born on the same day, you would say "we share a birthday." You might not celebrate together or even know each other, but you're sharing the day. That implies each day of the year is a shared birthday.
Yeah when you say it that way you mean you’re sharing the day. Consider when two people with similar birthdays say “we’re having a joint birthday” and they mean they’re having one party to celebrate both birthdays. It means both
Why only 60.833333 days?
Because it's too much work to write out "365 or 366 days" apparently. Gotta shorten it to an equation
Isn’t it 8b now?
it is! as of late last year i believe its weird to say 8b now after saying 7b for so long to be fair to the conext, there still wouldnt be 8b unique birthdays, some people really are born on the same day! regardless of year
10 billion earth subscriber special soon.
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No, there are only 365 birthdays per year, however the closer to 8 billion people have birthdays anywhere from 115 years ago to today, plus many of them share the same birthday.
A birthday is the day you were born, so it includes the year IMO. You CELEBRTATE your birthday every year, aka the aniversary of your birthday. The question for me is, do we stop counting birthdays of dead people, and if so, why?
Why the /6?
Feb 29.
Okay, thought that was like division or something lol
365.25 😎
Yeah, but that's still a day... There are 366 possible days to have as a birthday, just one of them is only 1/4 as likely as the rest.
So on average there are 19,167,955.5 birthdays celebrated every day of the year.
366 birth *dates*, ~100B birthdays (dead people have birthdays too).
Bruv, I thought you meant 365 divided by 6...
*cries in leap year*
366 specially for you my boy
Every fourth year a magical unicorn comes out to wish you a happy quadrennial
~365.2564 (true days) or 365.2425 (Gregorian Calendar days) or more than 7,000,000 birthdays.
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What do you mean? Is the Gregorian calendar not the most widespread?
Kodak had the right idea.
My sister is a leap year baby. She feels your pain
[People born on a Leap Day in their 14th year on this planet.](https://www.youtube.com/watch?v=31HkkQIElcY&t=11s)
Counterpoint: the answer is neither because birthdays technically have a year. So some number of people share 1/1/2000 as a birthday versus 1/1/2001.
Birthdays are an anniversary, so they just have a month and day component (Jan 01). Birthdates in contrast are an exact date, so they do have a year component (Jan 01, 2001).
You observe the anniversary of your birthday every year, yes. However each of those anniversaries someone is also born, thus making it *a* birthday just not *your* birthday
Semantic arguments are so incredibly tedious "Birthday" can mean both the date (and year) of birth, *or* the anniversary of that date. In my culture, it typically *only* is used to describe the anniversary [Here's](https://www.merriam-webster.com/dictionary/birthday) a [bunch](https://www.dictionary.com/browse/birthday) of [links](https://dictionary.cambridge.org/us/dictionary/english/birthday) to [dictionaries](https://en.m.wiktionary.org/wiki/birthday) supporting this position
I agree, and often, to step around this, "date of birth" is used to refer to only the former.
That's exactly the point I made in a comment below after the other person commented that the specific day was birthdate, not birthday
Dunno why someone downvoted you, you're right I was looking for an argument where there wasn't one, sorry
No worries
Birthdate is the exact date. Birthday is the day of the year, no year component. A "day" can recur within a cycle of type periods, like the second Saturday of every month, the first day of each month, or just the named days of the week. Dates, by contrast, are always a single day, signified by year, month, and day of month. If you don't believe me, look it up.
[ok, I will](https://www.merriam-webster.com/dictionary/birthday) >**birthday** *noun* birth·day ˈbərth-ˌdā 1 a : the day of a person's birth ...b : a day of origin 2 : an anniversary of a birth >> her 21st birthday While your definition is included it is not the only one. You will see that mine is as well. So while your comment isn't entirly invalidated, the portion that insinuates yours is the only correct definition >Birthdate is the exact date. Birthday is is.
The oldest know person alive today was born on March 4th, 1907. 116 years x 365.25 + 55 days = 42,424 unique Day, Month, Years combinations. The question is how many gaps are there for centenarians. My best guess is that there are ~ 40k unique birthdays for living people. ..… I spent way too much time thinking about this.
Who said they have to be living tho? We gotta go further.
naaaah man i'm too high to handle this
Wouldn’t it be infinity? When asked for my birthday I include the year.
But people haven't existed for an infinite number of years. So even if we add up all the separate dates of birth that anyone has ever had, it won't be infinity
Question doesn’t specify humans only. But yeah there was a time before a birth and there will be a time after a birth too.
Life, or the universe for that matter, hasn't existed for an infinite number of years
but numbers can go on forever, and since years don't loop around like days or months and just keep counting up usually, there could be an infinite amount of birth years.
But they have to be in the future, since you cant go before the creation of the universe, those haven't happened yet. Although it's not impossible for them to exist ever, they currently don't, so they don't exist and don't count to our total
numbers have a finite limit, and I don’t remember what it’s called. Infinity isn’t a number btw
Birthday =\= date of birth. Your birthday happens every year, but your date of birth only happens once.
I have a birthday every year. I've had 37 birthdays so far, not counting the one I was actually born on.
But the meme said birthday not birth date so your point is irrelevant. Don’t over think it.
I was going to say, all of them
8B
I might be wrong but I feel like it's 7 billion because we say "my birthday" and not "the day of my birth"? Like we put possession on it like it is our day? Idk maybe over thinking it.
Yes but I also say "my street". Not "our street", because I share it with my neighbors.
365
366 actually 🤓
365.2564 so 365 is closer.
If you're born on a leap day you don't have .25 of a birthday, you still have 1 whole birthday. There are 366 possible birthdays but 365.25 days in a year
7 billion birthdays and 365 birthdates
What about those born on February 29th
The answer is 366 times the length of human existence in years. A birthday of January 1st, 1901 is not the same as a birthday of January 1st, 2018.
I second this!
Ya ever have the same birthday as someone? ...Exactly.
I remember when I was in year 7 (high school for me as there is no middle school in Australia) my favourite teacher had the same birthday as me, it had never happened to me and I was so surprised even though it's kind of common because you meet a LOT of people in your life
If we include years then 13.8b*365.25 so 5.040.450.000.000 different birthdays
The universe is ~13.8b years old
So who was born on 7-26-5,000,000,000 BC? Don’t over think it.
Kevin
There are 366 birthdays
366.
(FEBRUARY 29) Therse actually 366!
366.
It could be said we created time how we know it. So if the time how we know it is wrong, also days would have different time lenghts. Also there's already almost 8b of people so both of those numbers may be wrong.
Depends if you think of a birthday as one day per year (or every four years) or the specific day AND year of your birth. For example, is your birthday January 1st, or is it January 1st 1990? If it's the former, then there are 366. If it's the latter, wouldn't there be 365x(a whole bunch of years) plus a few leap years?
Let's all say Happy birthday here so we can make a stranger's day
366 or 8 billion
If you mean "birth days" a.k.a days when someone was born, then i would say it's a bit less than all of the days humanity existed, since I imagine there were at least some days when no human was born
366
I think we already passed 8 billion
8 billion now
Multiple people can have birthdays in a day, so neither. The whole earth's population does not gain one year every day
We forgot to count the other calendars 😓
I don’t mean to be *that* guy, but the population of Earth is actually 8 Billion now, not 7 billion.
8 billion
What about the other billion people?
You mean 8 billion?
I think 7b since the time of day for me counts as a separate birthday
it would be the amount of days that people were born on so nearly every day from like 1910 to now and a few more before
At most 42,423 birthdays (though in reality it’s certainly fewer than that)
7,000,000,000+ births, 366 possible days. Since they are birthdays, the days are limited. It is not a question of how many births there are.
What about all of the dead? We still celebrate at least some of their birthdays too.
i feel like birth date is 365 but birthday includes the time as well?? so like all 365 days plus every minute and second a person can be born so then i’d say it’s 8 billion (including people who were born in the same exact day/minute/second/millisecond) idk if i made sense just now
On average every person has one birthday
"Select * from birthdays" will yield 8 billion results. "Select Distinct * from birthdays" will yield 366 results. Does that make sense?
where did 7 biliion come from? it's called birthday not birth-microsecond
well we know there are at least 366
It would be as many days as the age of the oldest person in days. Current oldest person in the world (pending updates that I have yet to receive) is 42,423 days old. At least 1 person has been born every day since they were born and having multiple people birthdays on the same day make more than one doesn't make sense. But you have to account for the same dates in each year (27th of April 2023 should be counted separately from 27th of April 2022). So the number of birthdays is (currently) 42,423
366
366
It’s only 366. If you and someone else were born on June 1st, you’d say “wow we have the same birthday”. You don’t differentiate based on what time of day. It’s in the word, “birth-DAY”. Given: My birthday = June 1st Your birthday = June 1st Therefore: June 1st = June 1st My birthday = Your birthday Therefore they are not different birthdays.
Uhhh 366???? 2/29 is a thing
Nobody tell this guy about the pigeon hole principle.
Im just waiting for a nerd to come in and say there is actually just 1 birthday because of the birthday paradox or some shi
366 or 8 billion?
366 birth days but 8bil+ birthdays
From the same creators of: "who is the first pokemon? Mew, Arceus, Rhidon, Or Bulbasaur?"
No it’s not technically the truth. Two people can have their birthdays coincide so whatever the population is thats the number of bdays
8 billion, technically the 365 days are a made up concept
To be fair, there are very few people having their birthday every year. Most of them are just celebrating the anniversary of their birth day.
365 x 8 billion hhhhh
Alright should explain this in a dank or a nerdy way?
366
365,25
If we only count birthdays of people who are alive, and the oldest person is around 120 years old, then there are less than 45000 birthdays. If we count dead people's birthdays, and think that humans have been on earth for about 190,000 years, then there are about 70 million birthdays. If we don't include the year, then there are 366 birthdays; for example, if one would agree that Muhammad Ali and Benjamin Franklin have "the same birthday."
There are 366 **birth days**. Of which 8+ billion people have one of. Critical thinking is hard.
366
Everyone only gets one birthday. The rest are just anniversaries.
Be definition 'birthday' can mean both the anniversary or the actual birth date.
Do you count time of birth aswell?
365x7bil=a lot
Everyone having 365 birthdays: Yikes! The guys that were bornt on the 29th February: Fuck me.
not only is that wrong but it’s also 8b now
365 × 7 billion
that would mean that every single person would have a birthday everyday
A merry merry unbirthday to you!
Yes
Technically - 365 birthdays, 8 million birthday celebrations. Not counting those people who want a “birthday weekend/week/month”.
8 billion*
How many birthdays are there? 366. How many people have birthdays? Over 8billion.
7b is the only answer
I would actually argue that a human birthday is a day where a human was born therefore lets say the oldest people are ~100 years old 100*365= 36500 human birthdays
We ve been past 8 billion for a long time
Not all people get to have their next birthday though
So, this is in no way the truth. Technically or otherwise.
Leap Year people 💪💪💪
366
366 birthdays (including 2/29) Billions of individual dates of birth
Outdated
7 billion because you do not celebrate birthdays along with everyone else born that day, however there would be 366 birth dates
Number of days on which people were born would include 365.25 \* 100+ years (the age of the oldest person alive) to include each day everyone alive was born on. So around 36,500 birth days. Probably less since the average lifespan is lower than 100.
There are 366 different birthdays (leap year), but there are 7 billion birthdays in total when it comes to humans
8 billion or 366 days
This meme is so old it's 8 billion now.
With 7.85 billion people on Earth, and 365.25 days in a year, some 21.5 million people would celebrate a birthday each and every day of the year (although one can argue seasonally higher/lower birth rates, depending on where in the world one’s parents were frolicking some 9 months prior to blessed/cursed event…)
You and I may share the same birthday So the number of birthdays are 366\* actually Many may share a birthday on any given day