Because of repeated comments about the timeline and whatever else... This was inevitable to make. I will edit it as the story progresses.
Year 0 = Nine-Tails Attack & The Birth of Naruto
All other dates are negative years counting backward. This timeline was taking the original run of Naruto, from Part 1, when he was still a kid, as a foundation. That is the baseline I am working with; any later addition was made to align with the original setup and references. Anything tacked onto it later on was modified so it could fit. If you have an issue with this timeline, I am sorry to hear that. It was already fucked, I am doing my best here.
WARRING CLANS & FOUNDING ERA (–100 to –60)
–100 to –90
Constant wars
–90 to –80
Births of Hashirama & Madara, somewhere here[1]
–75
Hashirama & Madara meet as children
–65 to –60
Founding of Konohagakure, somewhere here.
Fight between Madara & Hashirama[2]
–60 to -50
Hashirama dies whenever.[3]
Tobirama becomes the second Hokage.
FIRST SHINOBI WORLD WAR (≈ –55 to –50)
Early militarization of shinobi villages
Rise of international tactics, alliances, and treaties
Somewhere here, or maybe after, when Hashirama dies, Tobirama becomes the second Hokage.
Uchiha Police Force gains deeper authority
SECOND SHINOBI WORLD WAR (≈ –30 to –25)
–30
Hiruzen is the Hokage after Tobirama's death[4]
Fugaku Uchiha is a teen shinobi[5]
Jiraiya/Tsunade/Orochimaru become Sannin
Nagato/Yahiko/Konan become war orphans
Danzo expands ROOT during the chaos
Sakumo Hatake becomes a hero
–27 to –25
Orochimaru begins early experimentation after/during the war
Jiraiya is to train Nagato/Yahiko/Konan
BETWEEN THE WARS (≈ –25 to –20)
–25
Fugaku is now a young Chūnin/Jōnin
Sakumo Hatake is at peak reputation
Orochimaru's experiments are happening, unnoticed
Tsunade retreats emotionally after trauma
Jiraiya returns to the village somewhere around here
Danzo deepens ROOT research and teams up with Orochimaru
–23
Minato & Renjiro's birthdate
–17
Renjiro & Minato meet, entering the Academy
Midnight Exercise, where Renjiro awakens his Sharingan
Danzo, Hiruzen & Fugaku take note of Renjiro
–16
Fugaku makes contact with Renjiro
Second Tomoe awakening in a sparring fight between Minato & Renjiro
–15
Kushina arrives in Konoha
Characters
Considering the timeline, here are some characters and their birthdates, aligned with the timeline I am working with. I will go over most canon characters who may appear in the story or may be mentioned. Is this accurate? It aligns with my timeline above... that's enough. If you have issues with it, start looking into it, and you will realize how hard it is to align everything up.
Founding Era Characters
Hashirama Senju – born ≈ –95
Madara Uchiha – born ≈ –95
Tobirama Senju – born ≈ –90
Mito Uzumaki – born ≈ –90
Hiruzen's Generation
Hiruzen Sarutobi – born ≈ –55
Danzō Shimura – born ≈ –55
Homura Mitokado – born ≈ –55
Koharu Utatane – born ≈ –55
Chiyo (Suna) – born ≈ –60
Hanzō of the Salamander (Ame) – born ≈ –50
Onoki (Iwa) – born ≈ –55
Third Raikage – born ≈ –50
Sannin Generation
Jiraiya — born –50
Tsunade — born –49
Orochimaru — born –48
Sakumo Hatake — born –45
Fugaku Uchiha — born –40
Hiashi Hyūga — born –40
Hizashi Hyūga — born –40
Shibi Aburame — born –40
Mikoto Uchiha — born –38
Shikaku Nara — born –38
Inoichi Yamanaka — born –38
Chōza Akimichi — born –38
Shinno Arakumo — born –36
Daizen Uchiha — born –35
Naori Uchiha — born –34
Kento Yamanaka — born –34
Mika Hyūga — born –34
Hideo Sarutobi — born –34
Akira Tenma — born –34
Minato's Generation
Minato Namikaze – –23
Renjiro Uchiha – –23
Kushina Uzumaki – –22
Sayuri Yamanaka – –23
Rei Inuzuka – –23
Naoto Aburame – –23
Arai Uchiha – –23
Kenta Suda – –23
Hana Misaki – –23
Koji Tanaka – –23
Kakashi's Generation
Kakashi Hatake – –14
Might Guy – –15
Kurenai Yūhi – –15
Asuma Sarutobi – –15
Genma Shiranui – –17
Raidō Namiashi – –16
Shizune – –16
Yamato (Tenzo) – –14
Ebisu – –23
Anko Mitarashi – –12
Ibiki Morino – –21
Aoba Yamashiro – –18
Kotetsu & Izumo – –16
Hayate Gekkō – –11
Iruka Umino – –13
Everybody else is Year 0 and after, when the Kyuubi attack happens.
[1] Yes, this has to be this far back to make sense... Please don't make me go into how Hashirama could have spoiled Tsunade, if she is his granddaughter... Nor how old people are in this universe, when they are giving birth to kids, especially if we truly delve into the supposed ages of everybody, compared to their achievements.
[2] Or not, it could have happened later. But then... did Hashirama step down to let his brother be Hokage? Or was he chosen after Hashirama died? How did he die? In the First World War? See? SEE?! The timeline is beyond saving.
[3] Then that means Tsunade is already alive and... Didn't I tell you this timeline is FUCKED?! Anyway, I'm ignoring this.
[4] Or at the start of this on, otherwise all he did had to happen when he was not the Hokage. But if he wasn't the Hokage then... DO YOU SEE WHAT I HAVE TO DEAL WITH HERE TO MAKE SENSE OF IT ALL?!
[5] In the original part, Fugaku was meant to be older as a father, even according to some data books, where he was put to be in his 40s. There are multiple conflicting sources, so... fuck it.