Explaining Past on Instagram: "On December 31, 1999, the sun set over New York City with the Twin Towers standing in shadow. People around the world prepared for large millennium events. The scene became known as the last sunset of the 20th century. The sky glowed behind the skyline as the city stood still for a brief moment. It felt calm before a night filled with noise and celebration. The century ended a year later by the calendar, yet the feeling tied to that sunset stayed strong. Many saw i