1: Timeline of Naruto Universe
Source: https://keepyourpantsongohan.tumblr.com/post/170439568877/timeline-of-naruto-universe
Timeline of Naruto Universe
For my own purposes, I want to sort out a timeline for how I'd like to believe the events unfolded, starting with the founding of the villages as Year 0. There are a lot of contradictory statements about how old people are, when the village would've existed, etc. One clear example: I have to disregard the statement that Hashirama became Hokage 67 years prior to Naruto's events. Since he was Hokage at the time of Madara's defection, it was actually 74 years prior to Part II at minimum that Hashirama became Hokage, based on the ages of Hashirama's grandchildren.
So a lot of this is going to be 1) pure conjecture and 2) selective reasoning. It's also not going to pay much mind to birthdays aside from their year date, as that might make this overly complicated. It's a fruitless endeavour, really, but I thought it'd be fun to try to make sense of it all. Below the dates I have character ages where it is useful or relevant, as well as notes on how it fits into the narrative/in respect to other established dates. I'm sure there are better and more precise ones that exist, but this one's mostly just for me anyway.
So without further ado, here's my timeline:
• Year 0: Konohagakure is founded; village system established
• Characters: Hashirama and Madara approx. age 25
• Notes: Konoha is founded in the years following Izuna's death, who is approximately 24 when he dies. Madara and Hashirama both appear to be 1-2 years older than their siblings based on their appearances as children.
• Year 3: Akimichi Torifu is born
• Notes: According to the data books, Torifu is 30 at the time of his first Part II appearance in Chapter 481, thus dating his birth. Notably, this age would suggest he is a few years older than his teammates given that Kagami only lives until the age of 25. It is likely that he was among the first of the children born in Konohagakure, which is in keeping with the high status of the Akimichi as one of the four noble clans of the village.
• Year 5: Uchiha Madara defects from the village; Uzumaki Mito becomes Kyubi jinchuriki
• Characters: Madara, Hashirama and Mito approx. age 30
• Notes: Highly contradictory/conjectural; it is entirely possible that Madara stayed in the village for a much shorter (or longer) time than this, but I'm assuming based on the degree of development we see in Konoha while Madara is still there that he was there for at least a few years. This date is assumed because of Mito giving birth some time after this event, and that most shinobi (especially clan heads) would be having their first kid by 30ish at latest since life-spans were shorter (Hashirama stating that as he grew up, lifespans were around 30 years in Chapter 622). It is stated that Mito sealed the Kyubi within herself in order to change the tide during Hashirama and Madara's final battle (Chapter 500). However, Onoki has a confrontation with Madara around the time of his defection (Chapter 562). Since Onoki is 25 years older than Tsunade, he should technically be among Tsunade's parents cohorts, and therefore have been born around this time, rather than being old enough to confront Madara. Assuming Onoki was at least 12 at this time, this would force Onoki's age up to the same as Kakuzu's instead of 79 as stated.
• Known conflicts: Konoha internal strife (First Hokage's reign)
• Year 5: Uchiha Setsuna is born
• Notes: According to the data books, Setsuna was 26 at the time of his appearance towards the latter part of Tobirama's reign as Hokage thus dating his birth (See Year 31).
• Year 5-6: Senju Hashirama and Uzumaki Mito's child is born
• Characters: Hashirama and Mito approx. age 30-31
• Notes: Since Mito was a jinchuriki at the time of giving birth, it seems likely that the sealing would predate the pregnancy.
• Year 7: First Five Kage Summit convenes; Tailed Beasts are distributed among the nations; Suna begins sharing arable land with Konoha
• Characters: Hashirama and Mito age 32; Tobirama age 31
• Notes: The sealing of the Kyubi/Nine-Tails inside of Mito after Hashirama's battle with Madara sets the precedent in the Five Great Nations for sealing away Tailed Beasts, as noted in Chapter 500 when Kushina refers to Mito as the first Kyubi jinchuriki. It can be supposed that the subsequent sealing of Tailed Beasts occurred not long after, so as to maintain the power balance as best as possible when Hashirama offers the Tailed Beasts to the other nations (Chapter 648). Notably, at this same conference, Reto states Suna has already been in possession of a Tailed Beasts, and instead demands the exchange of land and a third of each nation's Tailed Beast's asking price.
• Year 7: Shimura Danzo and Chiyo are born
• Notes: Danzo is 1-2 years older than Hiruzen. Chiyo and Danzo are both approximately the same age, according to the data books. Chiyo is the first known birth in Suna history.
• Year 8: Sarutobi Hiruzen and Ebizo are born
• Notes: Hiruzen is 18 years older than his students according to data book entries, so based on the relative birth date of Tsunade, he is born in Year 8. Ebizo is 1 year younger than Chiyo.
• Year 9: Utatane Koharu and Mitokado Homura are born
• Notes: Koharu and Homura are 1 year younger than Hiruzen according to the data books.
• Year 10: Sarutobi Biwako is born
• Notes: According to the data books, Biwako is 55 at the time of the Kyubi's attack, thus dating her birth.
• Year 16: Mifune is born
• Notes: According to the data books, Mifune is 65 at the time of his Part II appearance, thus dating his birth.
• Year 18: Uzumaki Ise is born
• Notes: Nagato's father Ise's birthdate can be determined by working backwards from his age at death as stated in the Fourth Data Book, 34 (see Year 52). As they have no stated surname and at least one of Nagato's parents is known to be a member of the Uzumaki clan, that will be the surname which is used for their family.
• Year 19: Hatake Sakumo and Tazuna are born
• Notes: Sakumo's age is conjectural based largely on the difference in appearance between himself and Kakashi in Pain's Assault arc (Chapter 425). He appears to be significantly older than Kakashi, with eyes characteristic of those in the series in or approaching their 40s. However, he also claims that he and Kakashi both died young (Chapter 449) so their ages were likely still within a ten year range. By this timeline, he would be 38 at the time of his death. This is also compatible with the statement in Chapter 240 that implies his "time" or peak, might have been slightly prior to the Sannin, who were prodigies in their own right. However, anywhere from Year 17 to Year 22 could prove within an acceptable range for his birth. According to the earlier data books, Tazuna is approximately 51 years older than his grandson. Although the Fourth Data Book claims that he would be 64 in Part II, as 5 years could not possibly have passed between Parts I and II, this can be ignored.
• Year 20: Yuhi Shinku, Umino Ikkaku and Umino Kohari are born
• Notes: According to the data books all three characters are 45 at the time of the Kyubi's attack, thus dating their births.
• Year 23: First Kazekage Reto is killed by assassins; Shamon becomes Second Kazekage
• Characters: Reto age 58
• Notes: According to the Third Data Book, all Kazekages prior to Gaara are killed by assassination, and according to the Fourth Data Book, Reto's age at the time of his death is 58. I estimate him to approximately ten years older than Hashirama during the summit, which means his death would take place approximately sixteen years later.
• Year 24: Uzumaki Fusō is born
• Notes: Nagato's mother Fusō's birthdate can be determined by working backwards from her age at death as stated in the Fouth Data Book, 28 (see Year 52).
• Year 26: Tsunade, Jiraiya and Orochimaru and Kato Dan are born
• Notes: Assuming that Tsunade's parents were at least the age of majority (20), then the earliest possible year she could've been born is Year 26. Her fellow students are all the same age according the the data book entries. Dan Kato's birth year is estimated based on his death, as he died at age 27 during the Second Shinobi war which started approximately in the Year 52-53 (see points on Second and First Shinobi War for explanation).
• Year 27: Maito Dai is born
• Notes: Dai is 35 at the time of his death according to the data books, and thus his year of birth can be determined by subtracting from his point of death during the Third Shinobi War in Chapter 668. (See Year 62 for elaboration.) Had he lived, he would have been one year younger than the Sannin.
• Year 28: Senju Tobirama founds Konoha's Ninja Academy; at some point prior to this event, Senju Tobirama becomes Hokage
• Characters: Tobirama age 52
• Notes: According to the First Naruto Fanbook, the Academy was founded fifty years prior to Part I, as a ninja training camp at the base of the cliff to increase their military might. The same passage describes it as initially purely educational, but quickly merging with the military. As Tobirama is described as the Second Hokage here and implied to be in charge of their military at this time, it's likely he was already named Hokage. Notably, this suggests that until Tsunade's generation, there was no formal shinobi apprenticeship program in Konoha. According to the Third Data Book, Tobirama is responsible for many of the formal institutions in Konoha (i.e. the Academy, the police system, ANBU, and the Chunin testing system) arising "one after other another."
• Year 29: Chunin testing system is formed
• Characters: Tobirama age 53
• Notes: The Chunin system necessarily has to exist after the Academy formalizes shinobi education, and according to the data books is created around the time of several other institutions. See Year 28 for more details.
• Year 30: Uchiha Madara returns to attack Konoha; Senju Hashirama and Uchiha Madara engage in a life-or-death battle establishing the Valley of the End; Uchiha Madara dies by Senju Hashirama's hand and uses Izanagi to resurrect himself; Uchiha Madara awakens the rinnegan
• Characters: Hashirama age 55; Madara age 55
• Notes: Highly conjectural timeline. Although Chapter 625 describes that Madara "came back to attack Konoha" and flashes through a series of battle images, it is not made distinct in the manga whether this was related to his initial defection or not. The Fourth Data Book adds that Madara attacked Konoha multiple times. Taking the appearance of Kurama under Madara's control at face value, we can assume that some of these fight flashbacks were from the initial defection before Mito was jinchuriki, and that the others occurred after Kurama had been sealed away during the final battle in which Madara was killed by Hashirama. According to Chapter 681, Madara did die in their final battle and used a time-delayed Izanagi to resurrect himself after his corpse was sealed away in Konoha's mountains by Tobirama.
• Elaboration: In the same chapter, Because Hashirama remembers the Academy, their final battle must have occurred after the founding of the Academy (see Year 28) but before the founding the Uchiha Police Force (see Year 30, below) as Hashirama did not know about it in Chapter 619. While Hashirama and Madara's aging does not seem to indicate that so many years have passed, it is worth noting that Hashirama looks the same for his entire adult life in all depictions, even though it is known he lived to be a grandfather. Chapter 399, Obito suggests that the name of 'Valley of the End' arose out of this battle. This battle occuring during Dan and Tsunade's early childhood also makes more sense of Dan's seeming firsthand knowledge of Madara's strength in Chapter 577. It is stated in Chapter 681 that Madara transplanted the flesh he had bitten off of Hashirama in their final battle into his own wound and subsequently awakened the rinnegan.
• Known conflicts: Konoha internal strife with rogue Konoha ninja (Second Hokage's reign)
• Year 30: Senju Nawaki is born; Senju Hashirama dies
• Characters: Hashirama age 55; Tobirama age 54
• Notes: Here I pose a four-year age difference between Tsunade and Nawaki. Nawaki is 12 when he dies (Chapter 160), and Tsunade looks to be an older teenager (16-18). As for dating Hashirama's death, in his memory of Tsunade (Chapter 619) she looks no older than five. Notably, it's stated in First Data Book, "At the same time the village began to flourish, [Hashirama] lost his life." Which does fit in with the rising institutions put into place by Tobirama in Years 28-30. It is possible Hashirama's death resulted out of complications from his final battle with Madara (see Year 30, above).
• Year 30: Senju Tobirama founds the Konoha Military Police Force and institutes the Uchiha clan as its leaders; ANBU is formed
• Characters: Tobirama age 54; Ushi age 32; Baku age 31
• Notes: In Chapter 619, Hashirama seems to be unaware of Tobirama instituting the Konoha Police Force, so it likely took place after his death. In Chapter 399, it is said that the institution of the police force placed the Uchiha "removed the Uchiha from the governing body" placed them "under close scrutiny" while ANBU is shown, suggesting the two groups were formed around the same time. It is also noted in Chapter 619 that this event relocated the Uchiha clan to be at the "margins of the village" as the Police Headquarters was built next to the prison. According to the Third Data Book, Baku and Ushi were among the ANBU shown in Chapter 399 keeping close watch over the Uchiha.
• Year 31: Madara Faction of the Uchiha clan forms including Uchiha Setsuna
• Characters: Tobirama age 55; Setsuna age 26
• Notes: According to Chapter 399, after the Uchiha were put in charge of the police, a anti-establishment faction supporting Madara's will formed. As the Konoha Police Force being created had precipitated this event, it has to happen after its institution, but likely before the outbreak of war (See Year 33). According to the Third Data Book, Setsuna was a member of this faction at age 26.
• Known conflicts: Konoha internal strife (Second Hokage's reign)
• Year 31: The Fire Daimyo (Pt I-II) is born
• Notes: The Fire Daimyo is 50 years old at the time of his appearance in Part II, according to the Fourth Data Book, thus dating his birth.
• Year 32: Uchiha Fugaku is born
• Notes: Fugaku is 40 at the time of the Uchiha Massacre, which dates his birth around this time.
• Year 33: Kinkaku and Ginkaku disrupt allyship ceremony between Kumo and Konoha
• Characters: Tobirama age 57
• Notes: In Chapter 525, A (Fourth Raikage) describes Kinkaku and Ginkaku staging an attack on both the Second Raikage and the Second Hokage. Notably, it is strange that Kinkaku remains to have the status to lead a battle unit after this (as seen in Chapter 481), but it is possible that Kinkaku was only involved in attacking the Hokage, or that the Raikage was killed or injured and Kumo was without a leader to punish him.
• Known conflicts: Kumo internal strife (Second Raikage's reign)
• Year 33: First Shinobi War; Senju Tobirama dies at the hands of Kinkaku's battle unit; Sarutobi Hiruzen becomes Hokage
• Characters: Tobirama age 57; Hiruzen age 25; Danzo age 26; Torifu age 30
• Notes: Given Danzo and Hiruzen's significantly youthful appearances in the First Shinobi War (Chapter 481), I would place them at no older than 25. However, since Minato's age when he was named Hokage was considered somewhat notable (approx. 23) then I would assume that Hiruzen would've been at least a couple of years older. Although his students would've graduated the year prior, the war team formations suggest that Hiruzen did not take his own students on until after he became Hokage. According to the data books, Torifu is 30 years old at the time of his debut. Notably, Tobirama looks much younger than in his 50s at this time, but as Hashirama also maintains a much younger appearance in his later life as well, his youthful appearance may be a family trait.
• Known conflicts: Konoha v. Kumo (Second Raikage's reign)
• Year 32-33: Senju Tsunade, Jiraiya and Orochimaru graduate from the Academy; First Shinobi War Ends; Team Hiruzen is formed
• Characters: Tsunade, Jiraya and Orochimaru age 6-7; Hiruzen age 24-25
• Notes: According to the data books, Team Hiruzen all graduated at the age of 6. Being that most of the eligible sensei including their own would've been off fighting the First Shinobi War, it's possible there was a slight delay in team assignments this year. Given that Hiruzen is approx. 18 years older than his students, he would have been teaching them at age approx. age 24-25. Though Hiruzen does look older than his early 20s in Chapter 139 during their bell test, for the sake of reconciling the chronology of events and the Sannin's graduation ages, we can assume the First Shinobi War ended shortly before Team Hiruzen was formed, as a Hokage actively fighting a war would be unlikely to take on a genin team.
• Year 34: Uchiha Hazuki is born
• Hazuki, Uchiha Izumi's mother, is stated to be two years younger than Fugaku, thus dating her birth.
• Year 35: Teuchi is born
• Notes: According to the data books, Teuchi is 43 during the events of Part I, thus dating his birth. There is a contradiction between this and his listed Part II age, which is 47, because 4 years could not have passed during that time. However, here I choose his age at the time of his introduction.
• Year 37: Hyuga Hiashi, Hyuga Hizashi, Uchiha Mikoto and Kitsuchi are born
• Notes: Hiashi is 3 years older than Team Ino-Shika-Cho according to the data books. As they are twins, Hizashi was born at this same time. Mikoto is 35 at the time of the Uchiha Massacre according to the data book entries, which dates her birth around this time. Kitsuchi is 44 at the time of Part II appearance, thus dating his birth. If we are to assume Onoki's given age is wrong in order for him been able to meet an adult Madara, then he would've been in his 40s when his son was born.
• Year 37: Madam Shijimi is born
• Characters: Fire Daimyo age 6
• Notes: According to the First Data Book, Madam Shijimi, the Fire Daimyo's wife during the events of Part I, is 41 at the time of her appearance, thus dating her birth. This places her as 6 years younger than her husband.
• Year 38: Kazekage Rasa is born
• Notes: Rasa is 40 at the time of his death in Part I, according to the data books. This information dates his birth at this time.
• Year 39: Aburame Shibi is born
• Notes: Shibi is 1 year older than Team Ino-Shika-Cho.
• Year 40: Akimichi Choza, Yamanaka Inoichi, Nara Shikaku and Yakushi Nono are born
• Notes: Team Ino-Shika-Cho are 38 in Part I according to the data books. Nono dies at the age of 31 (see Year 70) thus dating her birth.
• Year 41: At some point prior to this, but not before Year 31, Roshi becomes Iwa's Jinchuriki
• Notes: In Chapter 572, Roshi mentions being jinchuriki for "40 plus years." This suggests that Roshi was made a jincuriki at latest by Year 41, but less than 50 years prior to Part II. It is unknown at what age Roshi became a jinchuriki, but based on the trend for jinchuriki after this point, we may assume it was in his childhood or adolescence.
• Year 41: Namikaze Minato and Uzumaki Kushina are born
• Notes: Minato and Kushina were 24 years old at the time of their deaths, and thus dating their births. If they had lived, they would have approximately 36-37 for the events of Part I.
• Year 42: Senju Nawaki dies; Nara Yoshino and Inuzuka Tsume are born
• Characters: Nawaki age 12; Tsunade age 16
• Notes: Nawaki dies shortly after he is given Hashirama's necklace on his 12th birthday. Tsunade's age at the time of Nawaki's death is conjectural, but fits well within the constructed timeline. Yoshino and Tsume are both 2 years younger than Ina-Shika-Cho.
• Year 43: Uchiha Yakumi is born
• Notes: According to Third Data Book, Yakumi, a member of the Uchiha Police Force and one of Fugaku's supporters in planning the Uchiha Coup D'etat as seen in Chapter 399, is 28 at the time of his appearance.
• Year 44: Killer Bee is born
• Characters: A (Fourth Raikage) age 11
• Notes: Killer Bee is one year older than the Ame Orphans.
• Year 45: Yashamaru is born; at some point prior to this, his elder sister Karura is born
• Notes: Yashamaru, Gaara's uncle, is 21 years older than him, according to the Second Data Book. Yashamaru describes Karura as his elder sister in Chapter 131.
• Year 45-46: Namiashi Raido, Uzumaki Nagato, Konan, Yahiko and Sasori are born
• Characters: Ise age 27; Fusō age 21
• Notes: Jiraiya is 19 years older than his students according to data book entries. Nagato's parents ages are determined by their data book ages at death and Nagato's relative age. Sasori and Raido are both the same age as the Ame Orphans, according to the data books.
• Year 46: Yamashiro Aoba is born
• Notes: Aoba is 1 year younger than Raido and 1 year older than Genma according to the data books.
• Year 47: Shiranui Genma is born
• Notes: Genma is 2 years older than Obito and the others born that year, according to the data books, and 3 years older than Gai.
• Year 47: Ichiraku Ramen opens
• Characters: Teuchi age 12-13
• Notes: According to the Third Data Book, Ichiraku Ramen has been in business for 34 years as of Part II (p. 109), thus dating its opening. Teuchi would have been approximately 12-13 at this time, suggesting that he inherited the business from a mentor or relative.
• Year 48: Hoshigaki Kisame and Ebisu are born
• Notes: Ebisu and Kisame are both 1 year older than Obito and the others in his class, according to the data books. Ebius is also 2 years older than Gai and several months to a year younger than Genma.
• Year 49: Uchiha Obito, Nohara Rin, Sarutobi Asuma, Yuhi Kurenai, Shizune, Terumi Mei, Tsunami and Chiriku are born; at some point prior to this, Sarutobi Asuma's sibling is born
• Characters: Shinku age 29; Tazuna age 30; Biwako age 39; Hiruzen age 41
• Notes: It is highly likely that Kakashi's classmates would've been older than him, because of his young graduation from the academy (age 5); combined with the data book entries which suggest that the majority of this class is aged 31 throughout Part II while Kakashi's age has a range beginning with age 29. Mei is 31 at the time of her introduction. Tsunami, Inari's mother and Tazuna's daughter, is in this same approximate age range, being 29 in Part I. Chiriku, a monk of the Fire Temple who was formerly a member of the Guardian Shinobi Twelve with Asuma, is the same age as him. The ages of Asuma's parents at the time of his birth can be determined based on the respective age differences between them according to the data books. The same principle applies to Kurenai's father, Shinku and Tsunami's father, Tazuna. As Asuma would've been 20 when his nephew was born, his sibling would have to be older than him in order to be past the age of majority when they had Konohamaru.
• Year 49: Blue B dies in Hachibi extraction with a rampage that kills Motoi's father and seven others; at some point prior to this the Third Raikage has two brothers who attempt to become the Hachibi jinchuriki; Killer Bee is chosen as Kumogakure's Hachibi jinchuriki
• Characters: Motoi and Killer Bee age 5; A (Fourth Raikage) age 16; Blue B age 22
• Notes: Chapter 494 establishes the timeline for the previous Hachibi jinchuriki's death and subsequent sealing, noting that Motoi and Bee are 5. Chapter 542 establishes that a total of eight people were killed in Hachibi's rampage, and that Blue B is Fourth Raikage A's cousin. In the same chapter, Blue B also states that his father and uncle failed as jinchuriki, which suggests that Third Raikage A loses two brothers to Hachibi (though their death is not explicitly stated, Blue B's funeral does reference a pattern of rampage and death). Blue B's age at this time is established in the Fourth Databook.
• Year 50: Uzumaki Kushina arrives in Konoha
• Characters: Mito age 76; Kushina age 9; Minato age 9
• Notes: Kushina was sent to Konoha to become the next jinchuriki and enrolled into the Academy, where Minato was also in attendance (Chapter 498). Considering that Minato graduates the Academy at 10 according to the data books, Kushina's arrival places her at age 10 or below upon arrival in Konoha. Assuming Kushina had at least one year of education at the Academy, she was 9 when she arrived. Mito's age at this time is conjectural based on closeness in age to Hashirama (see Year 5).
• Year 50: Maito Gai and Morino Ibiki are born
• Characters: Dai age 23
• Notes: Gai is closer to Kakashi's age than his other cohorts. Ibiki is one year older than Kakashi during the events of Part I. Dai's age at this time can be determined based on the fact he is 35 when he dies (see Year 62).
• Year 50: Hatake Sakumo fucks an alien
• Notes: Kishimoto you did this to yourself.
• Year 51: Hatake Kakashi, Momochi Zabuza and Samui are born; Namikaze Minato graduates from the Academy; Hatake Sakumo kills Sasori's parents; at some point prior to this, Third Kazekage's reign begins
• Characters: Sasori age 5-6; Minato age 10; Sakumo age 32
• Notes: Kakashi is approximately 10 years younger than Minato according to data book entries. Zabuza and Kakashi are the same age during Part I. Samui is also within a year of Kakashi's age. Based on his size and the fact he is not yet a genin, Sasori must be less than 7 years old (his academy graduation age) at the time of his parents' death. Here, I estimate him to be approximately close to age 5. Sakumo's age at this time is conjectural based on his manga appearances (see Year 19). Additionally, I posit that it makes narrative sense for the Third Kazekage to have been reigning during the death of Sasori's parents, as it would make Sasori's motives for attacking him more personal.
• Known conflicts: Konoha v. Suna (Third Kazekage's reign)
• Year 51-52: Nii Yugito, Hyuga Hoheto and Emi are born
• Notes: According to the Third Data Book, Kumo's jinchuriki Yugito is 29 years old at the time of her appearance/death. According to the Fourth Data Book, Hoheto, who appears in Kankuro's Commando Unit in the Fourth Shinobi War, is 29 years old at the time of his appearance in Part II. He is older than both Izumo and Anko, but seems to be younger than Kakashi. Emi, a Land of Fire tailor shop worker who meets Jiraiya and Naruto in Part I, is 25 of the time of her appearance according to the data books putting her in this same age range.
• Year 52: Mitarashi Anko, Hagane Kotetsu, Kamizuki Izumo and Yura are born
• Notes: Anko is 3 years younger than than Asuma and Kurenai, thus dating her birth in the the Year 52. Kotetsu and Izumo are approximately the same age as Anko. Yura of Sungakure, Sasori's spy, is also the same age.
• Year 52-53: Second Shinobi War begins; Uzumaki Ise and Uzumaki Fusō are killed by Konoha shinobi; Uzumaki Nagato awakens the Rinnegan; Tsunade develops her Yin seal; Hanzo names Sannin, Jiraiya remains in Ame
• Characters: Ise age 34; Fusō age 28; Jiraiya, Orochimaru and Tsunade age 26; Nagato, Yahiko and Konan approxmiately age 7
• Notes: The Second Shinobi war supposedly takes place 20 years after the first, and includes a conflict between Konoha, Suna, and Iwa (Second Naruto Fanbook, Kai No Sho). At some point after the outbreak of the war, Ise and Fuso, Nagato's parents are killed, causing Nagato to awaken the rinnegan. Their ages at death is stated in the Fourth Data Book. Nagato and the Ame trio's ages are determined by their relative age difference with Jiraiya. Additionally, at some point during this war, Tsunade develops her Yin seal, as during Chapter 160 during some stage of the war she is seen without it, but it is very likely that she had it behind her forehead protector during her combat in Ame (Chapter 446), and it is unlikely she would develop a combat-oriented seal after Dan's death gave her a fear of blood (Chapter 160).
• Known conflicts: Konoha v. Ame (Hanzo's reign); Konoha v. Suna (Third Kazekage's reign) v. Iwa (Second Tsuchikage's reign OR Third Tsuchikage's reign)
• Year 53: Sasori graduates from Suna's Ninja Academy
• Characters: Sasori age 7
• Notes: According to the data books, Sasori graduates from the Academy at the age of 7, twenty-eight years prior to the events of Part II.
• Year 53: Uzumaki Mito dies; Uzumaki Kushina becomes the Kyubi jinchuriki; Kumo makes failed attempt to kidnap Uzumaki Kushina
• Characters: Mito age 79; Kushina and Minato age 12
• Notes: According to the data books, Kushina was around the age of 12 at the time of Kumo's kidnapping attempt, and their purpose was to gain control of the Kyubi, meaning that she was made a jinchuriki at some point between the ages of 9-12. Based on her appearance, I would place her the upper end of that range when she speaks to Mito just before becoming a jinchuriki (Chapter 500). Mito's age at this time is conjectural based on closeness in age to Hashirama (see Year 5).
• Known conflicts: Konoha vs. Kumo (Third Raikage's reign)
• Year 53: Kato Dan dies; Tsunade develops a fear of blood and retires from active combat/medicine; at some point prior to this, but not before the Year 52, Minato witnesses the Sannin triad summoning in battle
• Characters: Dan and Tsunade age 27; Minato age 12
• Notes: Since Dan died at the age 27, he died during the Second Shinobi War in the Year 53. Interestingly, Shizune would've been only 4 when he died, and he died after his sister, so it's very likely that after this point Shizune was either raised by her father or by a non-relative. According to Chapter 634, Minato has previously seen the Sannin's "triad" summoning. However, as Katsuyu's power is linked to the summoner's Yin seal as stated in Chapter 635, it cannot have occurred before the start of the war, and it is highly likely that this event occurred before Tsunade retired from combat. The implication in this statement is that Minato was an active combatant in the Second Shinobi War.
• Year 54: Yamato/Tenzo, Umino Iruka, Gekko Hayate, Uchiha Shisui, Akado Yoroi, Tsurugi Misumi, Darui, Cee and Utakata, are born
• Characters: Ikkaku and Kohari age 34
• Notes: Yamato is approximately 3 years younger than Kakashi, given that Kakashi starts Part II off at age 29 where Yamato starts it off at age 26. Though the anime filler would place this age difference closer to 4 years, given the earlier supposition about Kakashi's age (see Year 49), 3 years seems a better approximate. Iruka is the same age as Yamato, and his parents Ikkaku and Kohari are 34 years older than him. Utakata is also the same age as Yamato. Although Hayate dies during the events of Part I, he is within a year of Iruka's age at the time. Shisui's age is conjectural based on his relative size and youth compared to Itachi in the anime adaptions and light novels. Yoroi and Misumi, who take the Chunin exams with Kabuto in Part I, are the same age as Hayate. Darui, Cee and Utakata are the same age as Yamato in Part II.
• Elaboration: Shisui is described in Itachi Shinden as "clearly older than Itachi" as well as already a genin by the time of their meeting, which suggests a difference of at least a few years. Combined with the fact that Shisui gains the nickname "Shisui of the Body Flicker" when Itachi is 6, I assume that Shisui would be no younger than 11 when this occurred. However, since the difference in their sizes isn't as drastic as the difference between Itachi and Sasuke, the age gap between them is likely no more than 5 years. In the same novel, Shisui is the primary breadwinner of his household by the Itachi is 8, which also supports this kind of age difference, since he would be 13 (a teenager) by that time.
• Year 54: Nii Yugito becomes Kumogakure's Nibi jinchuriki
• Characters: Yugito age 2
• Notes: According to the Third Data Book, Yugito becomes a jinchuriki age the age of 2.
• Year 54: Sasori becomes a Chunin
• Characters: Sasori age 8
• Notes: According to the data books, Sasori becomes a Chunin at the age of 8.
• Year 55: Uzuki Yugao is born
• Notes: According to the data books, she is 4 years younger than Kakashi as of Part I, and 1 year younger than Hayate at the time of his death.
• Year 55: Jiraiya returns to Konoha from Ame and becomes teacher to Team 6 (Minato, Dekai and unnamed teammate); Second Shinobi War ends
• Characters: Jiraiya age 30; Minato and Dekai age 14; Yahiko, Konan and Nagato age 10
• Notes: Since Jiraiya identified Nagato as the first Child of Prophecy, the Ame Orphans necessarily predate the Team Jiraiya that Minato was placed on. Jiraiya taught in Ame for 3 years before returning to Konoha, which means he couldn't have taught Minato until three years after the Second Shinobi War had begun, placing Minato at age 14. I am inferring that Minato's teammate Dekai would've been close in age to him. Although Jiraiya's team is pictured in Chapter 122 as younger children, all of the teams in Hiruzen's memories are pictured smaller than they are in other manga scenes, so this can be attributed to the memories themselves and early manga designs rather than any continuity issue. It is unclear at what point the Second Shinobi War ended, though the implication made in the Second Naruto Fanbook is that conflict flowed from the Second Shinobi War to the Third Shinobi War without pause, so there you can assume that the next war was declared within several months to a year of the Second ending.
• Year 56: Third Shinobi War begins; Team Jiraiya fight Iwa's jinchuriki Roshi and Han in battle; Uzumaki Kushina is confined to a barriered area in Konoha; Namikaze Minato masters developing the rasengan after three years of attempts; at some point before this, Namikaze Minato and Uzumaki Kushina start dating
• Age: Tsunade and Jiraiya age 31; Minato, Kushina and Dekai age 15
• Notes: It is established in Chapter 151 that it takes Minato three years to perfect the rasengan. These ages are conjectural based on Minato and Kushina's appearance within the Minato spin-off manga (Naruto Gaiden: Whirlwind in the Vortex), where they appear to have grown significantly since the Kumo kidnapping attempt. They are an established couple at this time. It could be argued that this battle was part of the Second War due to the Tsunade's presence in Konoha, but as she is seen standing in the hospital rather than actively providing medicine, and Minato is known to have fought in the Third War, I prioritize the existing canon. Jiraiya is also seen using the rasengan prior to this time in Ame, but as this is anime-only, this can be ignored. It is reasonable to assume that Onoki was Tsuchikage by this time, as it is consistent with Onoki's wartime expertise.
• Known conflicts: Konoha v. Iwa (Third Tsuchikage's reign)
• Year 56: Hatake Kakashi graduates from the Academy
• Characters: Kakashi age 5
• Notes: Kakashi's age of graduation implies that he was 2-3 years younger than his peers to enter the Academy and only remained there for a few months. In the Second Naruto Fanbook, the battlefield experience of "very young children," like Kakashi's graduating class, is attributed to the Third Shinobi War rather than the Second, so it can be assumed that the village was already in the Third Shinobi War when Kakashi was attending the academy and leading up to his graduation.
• Year 57: Hatake Sakumo dies; Maito Gai graduates from the Academy
• Characters: Kakashi age 6; Gai age 7; Sakumo age 38
• Notes: Sakumo's suicide takes place 5 years prior to the events of Kannabi Bridge. Permitting for assumed age gap between the members of Team Minato, this places Sakumo's death when Kakashi is 6, in Year 57. Gai graduates from the academy when he is 7, and he is approximately 1 year older than Kakashi. Sakumo's age at this time is conjectural (see Year 19).
• Year 57: Yakushi Kabuto is born
• Kabuto is approximately 31 years younger than Orochimaru.
• Year 58: Hidan is born; Uchiha Obito, Nohara Rin, Sarutobi Asuma and Yuhi Kurenai graduate from the Academy; Team Minato and Team Choza are formed
• Characters: Kakashi age 6-7, Gai age 8, Rin, Obito, Asuma and Kurenai age 9, Ebisu and Genma age 10; Minato age 17; Choza age 18
• Notes: Hidan is 1 year older than Itachi and 9 years younger than Obito according to the data book entries. Obito, Rin, Asuma and Kurenai graduate from the academy at the age of 9. Ebisu is 1 year older than Obito and graduates at the age of 10. Genma is 2 years older than Obito and graduates at 10, but if the exam took place in the spring, it would allow for both Ebisu and Genma to be 10. It is assumed that since 2/3 members of both Teams would've graduated at this time, both teams were formed this year. It is probable that Gai and Kakashi served as back-up genin on other squads until more of their peers were available to form squads.
• Year 58: Terumi Mei and Hoshigaki Kisame graduate from Kiri's Ninja Academy
• Characters: Mei age 9; Kisame age 10
• Notes: According to the data books, Mei graduates at the age of 9. As she is the approximately same age as Obito, it likely occurs in the same year. Kisame is 1 year Mei's senior and graduates at age 10, dating it as the same year. It is possible that this is the year that Zabuza massacres a number of Academy students (see Year 60 for further clarification.)
• Year 58: Team Minato and Team Choza take Chunin exams; Hatake Kakashi becomes a Chunin
• Characters: Kakashi age 6-7; Gai age 8, Rin and Obito age 9, Ebisu and Genma age 10; Minato age 17; Choza age 18
• Notes: Kakashi appears to take the Chunin exam in the manga with Team Minato, and as such it would be more likely that he was 7 rather than 6 as the data books imply, because Obito and Rin would not have graduated. It is further implied that Kakashi passes his Chunin exam before his teammates, suggesting that Obito and Rin took on a team alternate when they were promoted. The placement of their ages here is also highly contradictory, because although early manga canon and the data books establish Kakashi's promotion at 6-7, in the Chunin exam illustration/animation he is aged up to approximately 12.
• Year 59: Uchiha Itachi, Uchiha Izumi and Inuzuka Hana are born
• Characters: Mikoto age 22; Hazuki age 25; Fugaku age 27; Tsume age 17-18
• Notes: Itachi is approximately 8 years younger than Kakashi and approximately 6 years older than Sasuke (dated by the Uchiha Massacre when Sasuke is age 7 and Itachi is 13). There is a mild discrepancy between the stated data book ages for Itachi and his age difference with Sasuke in the manga, so in this case, I have chosen to prioritize manga canon. Itachi Shinden implies that Itachi's official age is increased, and that the difference between Sasuke a