On April 17, World Hemophilia Day is celebrated around the world. Every year, more and more regions of Russia take part in this campaign, turning on the red lighting not only to show support for people with hemophilia, but also to express gratitude to all blood donors. Symbolically the date April 20 is the National Donor Day. As a sign of solidarity and support for World Hemophilia Day and National Donor Day, the Kazan TV Tower will turn on the red lighting from 7.00 p.m. to 11.00 p.m. on April 17.