The meaning behind 9/11’s ‘Memorial Blue’

A quarter century after the Sept. 11 terrorist attacks, millions of Americans still remember one striking detail from that morning: the sky.

Before the deadliest terrorist attack in U.S. history, New York City experienced what many would call, a brilliant, cloudless blue sky, a shade that would later become known as "Memorial Blue" and one of the most enduring symbols of remembrance.

Through its annual "Remember the Sky" campaign, the 9/11 Memorial & Museum is inviting people around the world to photograph the sky wherever they are on Sept. 11 and share the image on social media using the hashtags #NeverForget911 and #RememberTheSky.

Here's what to know about why blue became synonymous with remembering 9/11.

Each year around Sept. 11, people wear shades of blue and landmarks across New York City glow in blue light to honor those killed in the terrorist attacks. The color, known as "Memorial Blue," is inspired by the clear, cloudless sky over New York on the morning of Sept. 11, 2001, a detail many Americans still vividly remember 25 years later.

The shade is also linked to "Trying to Remember the Color of the Sky on That September Morning," a permanent installation at the 9/11…

Original source: https://www.usatoday.com/news/nation/