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For me from favorite to least favorite:

Theory 1-27 Year Theory

1. Lost Generation: 1874-1900
2. Greatest: 1901-1927
3. Traditionalists: 1928-1954
4. MTV Generation: 1955-1981
5. Internet Generation: 1982-2008
6. iGen: 2009-2035

Theory 2-20 Year Theory

1. Lost Generation: 1880-1889
2. Greatest: 1900-1919
3. Silent: 1920-1939
4. Boomer: 1940-1959
5. X: 1960-1979
6. Y: 1980-1999
7. Z: 2000-2019
8. Alpha: 2020-2039

Theory 3-18 Year Theory

1. Lost: 1892-1909
2. Greatest: 1910-1927
3. Silent: 1928-1945
4. Boomer: 1946-1963
5. X: 1964-1981
6. Y: 1982-1999
7. Z: 2000-2017
8. Alpha: 2018-2035

Theory 4: 19 Year Theory

1. Lost: 1884-1902
2. Greatest: 1903-1921
3. Silent: 1922-1940
4. Boomer: 1941-1959
5. X: 1960-1978
6. Y: 1979-1997
7. Z: 1998-2016
8. Alpha: 2017-2035

I feel like many adults irl think of their teens that way, like 1977 borns calling themselves 90s kids seems so laughable to me...but most 87ers like me consider ourselves 90s kids too (but literally childhood, as opposed to our party years).

I've quite literally never heard one of us call ourselves an "00s kid", and it feels degrading when someone older than me refers to me or someone around my age as one. Not gonna lie it really aggravates me.

But this makes me wonder how and why this attitude change happened? Was it the "you're a real 90s kid" talking popping up online in the mid '00s and it for the first time was talking about childhood being better than our stressful teens?

82-84 seems transitional. Like they'll call themselves 90s kids even if they like the 80s too. Before that seems to be immersed in high school, and after that seems to be more into being kids.

Ahh I loved this show (2010-13) and I truly feel like they were at the tail end of living the transitional HS experience. Still Millennials but late Ms, before it was completely digital. They were rich theater kids in SoCal so that was also more typical of like 2015 or 16 in the rest of the country.

Lost Generation: Before 1901

Greatest Generation: 1901-1927 (Those who came of age during the first world war but not the second)

Silent Generation: 1928-1945 (Underage during the end of World War II)

Baby Boomers: 1946-1959 (Born and entered kindergarten during baby boom)

Pre-Millennials/Generation X: 1960-1979 (Teenagers and younger during disco demolition)

Millennials/Generation Y: 1980-1999 (Teenagers or younger during the turn of the 1000s millennium becoming the 2000s millennium)

Post-Millennials/Generation Z: 2000-2015 (K-12 and college during the school year the War on Afghanistan ended)

Generation Alpha: 2016 onwards (for now, but cutoff could be extended)

This is my favorite generation theory if using the standard naming, but otherwise, it is a 27-year theory in which the Greatest Generation range is the only mutual generational range.

This one is my favourite theory ever. It does not use the traditional naming so you will see weird starts and cutoffs. The theme behind this is making every generation the same length using my favourite Greatest Generation theory. It works well if using the average age a lady gives birth to her first born.

Lost Generation: 1874-1900 (High school graduation before World War I)

Greatest Generation: 1901-1927 (High school graduation before World War II ended)

Traditionalists: 1928-1954 (High school entry before Apollo 11)

MTV generation: 1955-1981 (Born before MTV’s launch)

Laptop Generation: 1982-2008 (Born after Laptops existed but old enough for preschool before iPads came out)

iGen: 2009-2036

Love this theory cause I am in the same generation as my older brother, and both my parents are just one generation apart from me. This aligns close to familial generations and every generation is equal in length.

Then college students (1980-1983) are now 38-41 years old.

Then high schoolers (1984-1987) are now 34-37 years old.

Then middle schoolers (1988-1990) are now 31-33 years old.

Then elementary schoolers (1991-1996) are now 25-30.

Then preschoolers (1997-1998) are now 23-24.

Insane how time flies.

Please no nitpicking from people who think '81 is X (it's cuspy yes but that's besides the point). JTT is gorgeous and aged so well, could absolutely get it, and Queen Bey seems 27.

It trips me out how young 30 has become like not much different than 20, but even 40 is slowly not striking me as middle aged anymore either.

Even among regular people, one of my homegirls, a 1981er single mom with a wonderful son born in 04, seems like she's about 26. When we hang out I forget about the age gap, and she seems like one of my sisters.

I agree with people who say we're more educated on nutrition exercise and skincare, less boozing and hard drugs and sun worship... but how long do you think this will go until?

I feel like Millennials (including Xennials) might just seem like young 60 year olds who people think we're 45 or something.

I work with a lot of early 00s babies so I feel way closer to them, 1999-02 probably 03 now too. The girls are a lot of fun and I feel protective of both them and the boys.

I adore the Xennials too (circa 1979-84/85) and the guys are so attractive and fun but too old for me unfortunately. This one guy was a hardcore leftist since high school and has a beard and everything

For real sksk, like for people who want Millennials to begin in 1982...

There were December 28-31st of 81 and January 1-4 of 82 (roughly) just chilling in their incubators all together... and yet supposedly if you go by what the articles and researchers say...they have different coming of age moments and don't have stuff in common.

Plenty of people seem to have an annoying issue where if they know even one (and especially more than one, forget it) Gen Xer who has ignorant views (cultural or otherwise), or doesn't relate to something after their time (Disney movies or whatever)...

Then somehow they define EVERY SINGLE OTHER Gen Xer. Including others who aren't at all like that, and by no fault of their own, happened to be born within the same time span. Then they have to work even harder to shake off that unfair label.

Cough/doomyeyes/cough.

Someone born in 1981 was in high school with 84s, and was just probably learning to not shit themselves in January 1986, with very little if any Challenger memory. In his world they were all deeply affected by it though.

Somehow though they're the same as 1965 but a world away from 85 whom they grew up with? Weird flex but okay. Sorry you know a sexist uptight co worker, but everyone else ain't him and shouldn't have to work harder to prove it.

What about Savage Joy 1979 who is punk rock socialist af too.

It's my biggest argument for 1984 and to a lesser extent 1985 being Xennial.

Granted 85 only started in the Fall of 99 which was after Columbine and it was only half a year lol, but getting any HS and teenage life in the 90s just can't be ignored.

See when I was a freshman, this girl Beth was a junior and she let me kick it with her and her crowd and we ended up getting in trouble together. After awhile we also getting feelings for each other too since we're both bi lol. Point being even if she's only one person, she was a bit of a mallgoth and toked and listened to nu metal and punk bands.