I've been trying to figure out how long the length of time is between each world wars. I know between the 1st and 2nd there was twenty years but the gaps between 2 and 3, and 3-4 are not clear. The thing that makes this hard for me to figure out is how old the characters are. For example, Nagato's parents died during the 2nd war and they were trained by Jiraya around this time as well. Yet he's around 35 years old at the time of his death. The thing that makes this weird is Kakashi is like 30-31 at this time same goes for Obito. So can someone help clear this up for me. How long of a gap was there between the 2nd and 3rd wars, and 3rd to 4th wars.