Correct Answer : Option (C) - April 12th
The International Day of Human Space Flight is a United Nations-declared celebration of human spaceflight, observed every year on April 12th.
In 2011, the United Nations General Assembly (UNGA) declared April 12th as the International Day of Human Space Flight, recognising the 50th anniversary of the first-ever human spaceflight.
International Day Of Human Space Flight History : On April 12, 1961, Yuri Gagarin, a Soviet cosmonaut, carried out the first human spaceflight. This was a historic event which paved the way for space exploration for the benefit of all humanity.
This year, April 12 marks the 61st anniversary of the first human spaceflight. Gagarin is also known as the 'first man in space'.
Gagarin launched into space aboard a Vostok 3KA spacecraft, atop a Vostok-K rocket, from Baikonur Cosmodrome in Kazakhstan, at 9:07 am Moscow time, on April 12, 1961. He orbited Earth once in one hour and 29 minutes at a maximum altitude of 301 kilometres, making him the first human to orbit Earth. After this, he landed in the Soviet Union at 10:55 am Moscow time.
Gagarin became immensely popular around the world after his spaceflight mission. The Soviet cosmonaut was awarded the Order of Lenin and given the titles of Hero of the Soviet Union and Pilot Cosmonaut of the Soviet Union.
After Gagarin's death in 1968, the town of Gzhatsk was renamed after him..Source : ABP Live