Howrah bridge was illuminated in blue light to mark World Autism Awareness Day Kolkata: Howrah bridge illuminated in blue light to mark World Autism Awareness Day pic.twitter.com/Nhzi3AmtVV — ANI (@ANI) April 2, 2021 On 11th January 2020, PM Modi inaugurated light-and-sound show on Howrah Bridge Tags Howrah bridge Kolkata Howrah bridge Kolkata