anime abridged & manga

BSS: Before Series Start ASS: After Series Start (All dates approximate) 26 Yrs. BSS - Kakashi Born 21 Yrs. BSS - Graduates Academy 20 Yrs. BSS - Passes Chuunin Exam 17 Yrs. BSS - Placed on team with Uchiha Obito and Rin under man who becomes Yondaime Hokage. 13 Yrs. BSS - Advances to Jounin, Goes on mission to Grass Country, Left eye damaged in battle, Obito gets crushed and gives his Sharingan eye to Kakashi. 12 - 1 Yrs. BSS - Gains name "Copy Ninja Kakashi" for Sharingan usage, Joins ANBU and later leaves the elite group, Achieves third tomoe in Sharingan eye. 0 - Series Start, Becomes Jounin Sensei of Team 7.

1 Mo. ASS - Leads Team 7 on mission to Wave Country. 6 Mo. ASS - Teach Sasuke how to use Chidori. 7 Mo. ASS - Assists Konoha in Sound and Sand Invasion. 8 Mo. ASS - Given many high-ranking missions. 9 Mo. ASS - Returns to Konoha to learn Sasuke left, Uses nin-dogs to track Naruto and Sasuke, Retrieves Naruto from Valley of the End. 10 Mo. ~ 3 Yrs. 3 Mo. ASS - Trains and achieves Mangekyou Sharingan. 3 Yrs. 3 Mo. ASS - Meets Naruto again, Travels to River Country to save Gaara, Fights Deidara with Naruto, Weakened heavily from Mangekyou Sharingan use 3 Yrs. 4 Mo. ASS - Recovers in Konoha hospital, Meets new Team 7

he then fights to defend konoha from pain, and dies from over use of the sharingan

spoiler aahh we dont know for sure yet in the manga 430 u can see one of those healiing slugs on him