holidays
Commemoration of first human in space by Yuri Gagarin: Cosmonautics Day (Russia)
Related Wikipedia articles
Cosmonautics Day
Russian holiday
Cosmonautics Day is an anniversary celebrated in Russia and some other post-Soviet states on 12 April. In 2011, at the 65th session of the United Nations General Assembly, 12 April was declared as the International Day of Human Space Flight in dedication of the first crewed…Source: Wikipedia (CC BY-SA)