BEIJING, CHINA - APRIL 02: China Millennium Monument is illuminated in blue to mark the World Autism Awareness Day on April 2, 2015 in Beijing, China. (Photo by Emmanuel Wong/Getty Images for Autism Speaks)
TAIPEI, TAIWAN - APRIL 02: The Taipei 101 building is illuminated in blue to mark the World Autism Awareness Day on April 2, 2015 in Taipei City, Taiwan. (Photo by Ashley Pon/Getty Images for Autism Speaks)
CANBERRA, AUSTRALIA - APRIL 02: Old Parliament House is illuminated in blue to mark the World Autism Awareness Day on April 2, 2015 in Canberra, Australia. (Photo by Martin Ollman/Getty Images for Autism Speaks)
A woman sits with a child during a demonstration to raise Autism awareness on World Autism Day in Paris on April 2, 2015. AFP PHOTO/JACQUES DEMARTHON (Photo credit should read JACQUES DEMARTHON/AFP/Getty Images)
NEW YORK, NY - MARCH 30: Brooklyn Nets player Deron Williams speaks onstage during the Autism Speaks Tip-off For A Cure 2015 on March 30, 2015 in New York City. (Photo by Cindy Ord/Getty Images for Autism Speaks)
#LightItUpBlue Oggi è #WorldAutismAwarenessDay
Abbiamo conosciuto @At21Firenze @LightItUpBlue @comunefi #firenze http://t.co/FZBUWU5MF3
We at @menarakl celebrate World Autism Awareness Day! I look BLUE tonight! 💙💙💙💙 #menarakl #kltower #kl #tower #klcity #kualalumpur #malaysia #autism #worldautismawarenessday #autismawareness #2april #support #blue #love #LightItUpBlue #LIUB #wecare #nofilter
Raising a flag for #worldautismawarenessday @skylightfinancialgroup #ohiocity #cleveland
.@Ravens Nation: Today is #WorldAutismAwarenessDay. #lightitupblue to show your support! @autismspeaks http://t.co/3ua3adxfBI
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On April 2 every year, the global autism community celebrates World Autism Awareness Day, which was declared in perpetuity by the United Nations in 2007. Join in at www.lightitupblue.org
The eighth annual World Autism Awareness Day is April 2, 2015. Every year, autism organizations around the world celebrate the day with unique fundraising and awareness-raising events.
Facebook has a page set up to commemorate the day, and it's already gained almost 800K likes.