High Quality Content by WIKIPEDIA articles! The White Nights are a kind of all-night arts festival held in many cities in the summer. The original festival is the White Nights Festival held in Saint Petersburg, Russia. The white nights is the name given in areas of high latitude to the weeks around the summer solstice in June during which sunsets are late, sunrises are early and darkness is never complete. In Saint Petersburg, the Sun does not set until after 10 p.m., and the twilight lasts almost all night.