Answer: April 12
Notes: April 12 is celebrated every year as the International Day of Human Space Flight to honour the achievements of space exploration. This day marks the anniversary of the first human space journey by Yuri Gagarin in 1961, who orbited Earth in the Soviet spacecraft Vostok 1. It was declared by the United Nations General Assembly (UNGA) in 2011 to highlight the importance of human space travel. The day recognises both past accomplishments and the ongoing efforts to explore outer space for the benefit of humanity.
