Okay, so I don't exactly have a theory at the moment, but I was hoping someone could help me here. So I like to make my own notes sometimes, including on things like Sailor Moon. It saves me some trouble in looking up some stuff. And lately, I decided to make a new version of one of those sets of notes, since it was in an old Word format. Now those notes had the Senshi (plus Mamoru's) birthdates, complete with estimated years. I found it on some site I think.

As I was copying it over, I noticed something that confused me. The birth year for Usagi and the Inners was listed as 1978. That's reasonable, since they were 14 to start with in all mediums and both the manga and anime started in 1992.

But then I noticed that people like Haruka were listed as also being born in 1978, as well as Michiru. Now Haruka appeared in the manga in 1994. And she appeared in the anime in 1994 too, at least when it originally aired in Japan. And she was 16 to start with, so 1994 -16 = 1978.

But both the manga and anime lasted several years, and yet, if I read this right, Usagi goes from the start of the material to the end, going from ages 14-16, so only two years passed. And weren't the Outers like Haruka supposed to be older than the Inners?

And then I see that Hotaru's age from the manga is listed as 8-11. That implies the passage of three years. And Setsuna's regular age is listed as 19-20. Of course Chibiusa is discounted because she's from the future and her physical growth is completely messed up. But still...

Could someone help me sort out the probable birth years, or help me with how time probably passed in SM?

Two years did indeed pass in the anime. I've always went under the assumption that Haruka and Michiru were a year older than the other girls, but now that I think about it, with the Japanese school year...

The next school year starts in April with the Sakura blossoms blooming therefore Haruka and Michiru would be put a year before the other girls because Haruka was born in January and Michiru was born in March. Meanwhile all the other girls were born in April or after April.

I think with the anime versus manga, don't worry about the years too much in the anime since they had a lot of filler episodes while waiting for more of the manga to come out. Stick to the time frame in the manga.

Well with Hotaru she was reborn at the end of S as a baby then in both in the manga and anime she was able to become the age of 11 like that. So I think she could be discounted.

This is a bit strange.

With the Anime, many theories was made that because Usagi's wish to be a 'normal girl' was so strong, it essentially reset the timeline.  (that's one theory I've heard).

With Hotaru, don't bother trying to understand time with her because of how she aged was rapidly after she was born. 

Setsuna doesn't actually have a 'regular' age. We can only assume that she's at least 20-21 at the most because she's able to drink.  (Coming of age/Legally able to drink alcohol is 20 in Japan overall).


However, my friend did a timeline for an RPG we were doing. I think I have it still, so it might help.

Quote :

August 3, 1975 – Birth of King Endymion Chiba Mamoru

January 27, 1977 – Birth of Tenou Haruka

March 6, 1977 – Birth of Kaiou Michiru

April 17, 1978 – Birth of Hino Rei

June 30, 1978 - Birth of Neo Queen Serenity Tsukino Usagi

September 10, 1978 – Birth of Mizuno Ami

October 22, 1978 – Birth of Aino Minako

December 5, 1978 – Birth of Kino Makoto

January 6, 1980 – Birth of Tomoe Hotaru

1980 – Car accident causes permanent amnesia in Chiba Mamoru and kills both 
parents.

1981 - Birth of Tsukino Shingo

1989 – Laboratory explosion leaves Tomoe Keiko dead and injures Tomoe Hotaru. 
Professor Tomoe Souichi uses his research to save Hotaru's life with the help 
of Pharaoh 90.

1991 – Minako encounters Artemis for the first time and becomes Sailor V.

March 7, 1992 – Usagi encounters Luna for the first time and becomes Sailor Moon.

1994 – End of Sailor Stars

October 1998 – Usagi and Mamoru marry.

June 30, 1999 – Birth of Princess Serenity Small Lady Chiba Usagi.

We could assume that what happened in 94 (Super)  actually happened in 93 and that Supers/Stars happened in 94 instead. 

Then you have to think about how many months it actually took to defeat each enemy and boss.  I'd say an average of 2months or 3months for each  (but that's me guessing the right time line.)


Anyway, I hope this helps a bit. It might actually make you more confused anywayxD;

Besides the fact we know Setsuna is able to drink, she's ageless being the guardian of time and all.

Thank you all.

With the way the ages of the Inners are listed as 14-16, that implies that two years passed in the manga too. But if the Haruka and Michiru were supposed to be older to start with, then maybe their age ranges of 16-18 are relative to year the series started and not when they showed up. So if you leave the starting year as 1992, that would make their birth years 1976 I guess.

I wasn't sure about Hotaru. I could understand her rapid aging in response to a threat, but I figured the accelerated pace would have merely pushed her back to whatever her age was the first time around when she was growing naturally and not past that.

But if her original age of 8 is relative to 1992, that would mean she was born in 1984. And I guess since her birthday is so early, she could have turned 11 if continuity just barely touched 1995. And if Setsuna's birthday is also relative to 1992, then her birth year would be 1973.

If, assuming of course, she was reborn the same way as everyone else and actually lived a life.  There's always a chance she had the same setup as Chibiusa, sans the memories.  Where the person just appears but everyone around them believes they've been there all along.

^I always assumed she did get a normal birth.

I didn't assume mostly because of what Chibiusa was able to do with her Luna P.  I mean, if you're able to give a child the power to essentially manufacture memories and an entire identity, I think reviving a body, sending it back with the same level of tech isn't an impossible thing. 

That and it's never hinted that Neo Queen Serenity was able to also do what her own mother has done with time.  (Of course, Queen Serenity didn't seem too specific about the timeline era of a 'future on earth' and it didn't seem like too much of a concern at the time.)

I would imagine it takes less concentration to transplant Setsuna at her current 'age' revived by NQ Serenity's power (something she's shown many times to do with ease now) and living with surpressed/without the memories of her senshi duties or life.

Because there's a bunch of other factors that could get in the way if she was reborn like everyone else 'normally' was.

An example of what could happen if you just toss people around with reincarnating them (thus messing with the cycle of reincarnation in the first place with the Galaxy Cauldorn.), is Hotaru and heck even Mamoru. 

Mamoru could've very well have died with his parents. He ultimately lucked out and survived.  Hotaru could've died with the explosion in her father's lab if her father hadn't been an A+ genius with cybernetics (Manga) and/or made the deal with that daimon to save Hotaru.


If, NQ Serenity's memories didn't include the Super, yet, than she could safely assume that that point and time was a very safe point to put Setsuna. Both for Setsuna to find her own way and become happy and also if the need for senshi arise, they would have the added power of Pluto who would be right in the same area. 


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Of course flip side, one could make the argument that NQ Serenity could've made a gamble and -hoped- that Setsuna would have a pretty much quiet life.  But there's no promises that she would've chosen that field to study, that particular building to buy (with what money? How is she rich?) and to live in that particular area at that exact moment and time she would be needed again to awaken?

(At least Haruka and Michiru have reasons why they're rich based off their talent. Mamoru has money due to inheritance as he never seems to have a job in the manga and the same can be assumed of Makoto.)