The Great Naruto Timeline
The dates in this timeline use as reference what is probably the most significant event to occur in the Narutoverse to this point: the defeat of the Kyuubi. Thus, years marked as "BK" mean "Before Kyuubi", and those marked as "AK" are "After Kyuubi". The year 0 AK is the year in which the Kyuubi was defeated. Capice?
The databook is theoretically accurate up until the death of the Third Hokage; however, this produces a lot of conflicts of graduation age versus actual age. Look at Kiba's entry, for instance; it says he graduated at 12 (the Konoha rookies graduated 15 October) and is still 12 as of Sandaime's death (he was killed on 11 August of the next year). Kiba's birthday is 7 July. Something doesn't add up. Therefore, I just took all the databook's listed ages as being accurate to THE FIFTEENTH OF OCTOBER, 12 AK - the date the Genins graduate from the academy, and ostensibly the beginning of the series. Note that Hyuuga Hinata is an exception to this rule - this is necessary for the Hyuuga clan timeline to make sense.
Dates marked such as "2 BK ~ 0 AK" mean that the indicated events occur at some point during the listed interval. The events are, however, listed in chronological order within the time.
Corrections and modifications are welcome in the form of replies to this thread; I'll be updating the timeline as new or more correct information comes to light. For real, if you guys noticed a calendar or something somewhere that gives an accurate date on anything, let me know and I'll edit this so it's as accurate as possible. Particular help wanted on Team Shikamaru's mission - I'm seriously too tired to go sifting through that section of manga to hunt down a time reference. ^.^ Hope you find this useful.
8 February - Sandaime Sarutobi is born.
Shodaime and Nidaime found Konoha, the Village of the Hidden Leaf.
Tsunade is born.
27 October - Orochimaru is born.
11 November - Jiraiya is born.
8 January - Hyuuga Hiyashi and Hyuuga Hizashi are born.
17 July - Shiranui Genma is born.
8 March - Ebisu is born.
26 August - Momochi Zabuza is born.
18 October - Sarutobi Asuma is born.
21 October - Mizuki is born.
20 March - Morino Ibiki is born.
11 June - Yuuhi Kurenai is born.
1 January - Maito Gai is born.
15 September - Hatake Kakashi is born.
26 May - Umino Iruka is born.
24 October - Mitarashi Anko is born.
2 November - Gekkou Hayate is born.
29 February - Yakushi Kabuto born.
14 February - Ayame born.
9 June - Uchiha Itachi is born.
9 January - Haku is born.
23 August - Temari is born.
Mitarashi Anko becomes a Genin at age 10, begins receiving training from Orochimaru.
15 May - Kankuro is born.
12 June - Dosu Kinuta is born.
6 July - Kin Tsuchi is born.
14 September - Zaku Abumi is born.
27 November - Rock Lee is born.
9 March - Tenten is born.
3 July - Hyuuga Neji is born.
2 BK ~ 0 AK
Orochimaru leaves Konoha village.
Uchiha Obito is killed. Hatake Kakashi acquires the Sharingan.
Yondaime is officially made the Fourth Hokage.
19 January - Gaara is born.
23 January - Aburame Shino is born.
28 March - Haruno Sakura is born.
1 May - Akimichi Chouji is born.
7 July - Inuzuka Kiba is born.
23 July - Uchiha Sasuke is born.
22 September - Nara Shikamaru is born.
23 September - Yamanaka Ino is born.
10 October - Uzumaki Naruto is born. The Kyuubi is defeated. Yondaime is killed.
27 December - Hyuuga Hinata is born.
27 December - Hyuuga Hinata turns 3. Hyuuga Neji, as a member of the Hyuuga Branch House, receives the Hyuuga Bunke Juinjutsu.
30 December - Konohamaru is born.
Sinobi Gashir of the Hidden Cloud attempts to abduct Hyuuga Hinata.
Hyuuga Hizashi is killed in place of Hyuuga Hiyashi.
The Cloud and the Leaf achieve peace.
7 March - Hyuuga Hanabi is born.
9 June - Uchiha Itachi turns 13.
June ~ July - The Uchiha clan is slaughtered by Uchiha Itachi.
23 July - Uchiha Sasuke turns 8.
7 July - Akamaru is born.
October - Rock Lee, Hyuuga Neji, and Tenten graduate from the academy.
10 October - Uzumaki Naruto turns 12.
15 October - Series start. The Konoha Rookie Nine, including Uzumaki Naruto, officially graduate from the Academy.
March~May: Team 7 is ordered to escort and assist Tazuna. Haku and Zabuza are fought and killed.
1 July - Chuunin Written Exam is held.
2 July - Chuunin Field Exam in the Forest of Death begins.
3 July - Orochimaru attacks Sasuke, and marks him with the Tenfuuin.
4 July - Fight with Dosu Kinuta and his team.
7 July - Chuunin Field Exam ends. Preliminary Chuunin Tournament is held. Zaku Abumi and Kin Tsuchi are killed.
July ~ August - Dosu Kinuta is killed. Gekkou Hayate is killed. Uzumaki Naruto learns to summon Gamabunta.
11 August - Chuunin tournament is held. Sandaime Sarutobi is killed.
13 August - Sandaime Sarutobi's funeral is held.
~27 August - Itachi and Kisame arrive in Konoha. Jiriaya and Naruto leave to find Tsunade. Kakashi and Sasuke put into comas from Itachi's Tsukiyomi.
28 August - Naruto begins training the Rasengan
29 August - Morning - Naruto completes part one of training; begins part two.
30 August - Naruto completes part two of training. Tanzaku Castle Destroyed by Orochimaru. Naruto begins part three of training. Naruto accepts Tsunade's challenge.
6 September - Sannin fight occurs. Naruto first uses the Rasengan.
7 September - Tsunade arrives in Konoha, officially becomes Godaime Hokage. Shikamaru promoted to Chuunin.
8 September - Naruto and Sasuke fight on the rooftop. Sasuke invited to join Sound. Sasuke leaves with the Sound Four.
9 September - Team Shikamaru forms, begins "rescue Sasuke" mission. Lee undergoes surgery. Chouji and Neji's battles occur.
10 September - Kimimaro appears and the remainder of fights occur. Sasuke and Naruto fight at the Valley of the End. Chouji and Neji undergo surgery. Sakura begins training under Tsunade.
December - Naruto leaves Konoha to train with Jiraya.
3 July - Hyuuga Neji turns 16.
7 July - Inuzuka Kiba turns 15.
23 July - Uchiha Sasuke turns 15.
23 August - Temari turns 18. (Sweet.)
15 September - Hatake Kakashi turns 29.
22 September - Nara Shikamaru turns 15.
23 September - Yamanaka Ino turns 15.
10 October - Uzumaki Naruto turns 15.
27 November - Rock Lee turns 17.
27 December - Hyuuga Hinata turns 15.
30 December - Konohamaru turns 12.
1 January - Maito Gai turns 30.
19 January - Gaara turns 16.
23 January - Aburame Shino turns 16.
9 March - Tenten turns 17.
28 March - Haruno Sakura turns 16.
1 May - Akimichi Chouji turns 16.
15 May - Kankuro turns 18.
26 May - Umino Iruka turns 29.
9 June - Uchiha Itachi turns 21.
June - Naruto returns to Konoha after two and a half years of training.