No. NASA has not confirmed any such occurrence and there will not be 15 days of darkness in November.
Following the solar eclipse that passed through the United States on Monday, August 21, rumors that there was going to be “15 days of darkness” began circulating. According to Snopes, the initial report first surfaced back in 2015. Due to Monday’s eclipse, the rumors resurfaced — but said rumors are completely false.
It didn’t take long for the following old report to start making the rounds and for social media to light up with posts about this supposed “black out” that would take place in three months time. Read more of the news at Heavy.com.
Of interest, solar eclipses have caused fear, inspired curiosity, and have been associated with myths, legends, and superstitions throughout history. Even today, an eclipse of the Sun is considered a bad omen in many cultures.
Check out these Myths and Superstitions Around Solar Eclipses compiled by TimeandDate.com.