The International Day of Human Space Flight, which is also Cosmonautics Day in Russia and other countries, is the annual celebration, held on April 12, of the anniversary of the first human space flight by Yuri Gagarin.
Yuri Gagarin carried out Vostok 1 space flight in 1961, making one orbit around the Earth over 108 minutes in the Vostok 3KA spacecraft launched by Vostok-K launch vehicle.