How long will the 4th Shinobi World War last in the series of Naruto Shippuden?

I'm currently watching Naruto Shippuden again on Netflix and wanted to know how long the whole war within the series will last?

Just a couple of days. But is artificially drawn out by many filler sequences.

Is in October as Naruto's birthday is during that time.

Before that, Mirai, the daughter of Asuma and Kurenai, was born.

You mean how many days / weeks / months does the 4th Shinobi World War last in the series itself? You can probably not say exactly. Sometimes several days pass between episodes, sometimes the next episode follows the last one. If there's no precise information from the producer, it will not be possible to answer the question.

Not a long couple of days