Since Kakashi and Obito were 13 during the Third Shinobi World War and 31 during the Fourth, it should be an approximate 18 years between the two wars. It lasted around three days, maybe five if one includes the declaration, amongst other things.
It spans through volumes 55 to 59, or more specifically, covers chapters 516 to 559 of the manga and episodes 261 to 270, and also picks from 272 to 289 of the Naruto: Shippūden anime and later picks up from episodes 296 to 310, and 312 to 321.
Fourth Great Ninja War Arc(Naruto: Shippuden). This arc was the best arc in Naruto Shippuden and thus, the longest arc in anime having 200+ episodes.
9 Skip: Paradise Life On A Boat It's an easy choice to miss as all of the episodes are pretty inconsequential and are mostly just light-hearted romps. If someone is in the mood for some funny stories though then there are a few gems hidden in this arc. There is one story about Naruto's shadow clones going on strike.
If you add too many large rocks to the tumbler they will crush your small material or break one another as a result of the impacts that occur in the barrel. In making these large tumbled stones our rocks spent over one month in coarse grit.
So, it takes between 0.0012 seconds and 119 years to upload a 2 minute YouTube video, depending on the video bitrate and speed of your Internet connection.