International Day of Human Space Flight
The International Day of Human Space Flight is the annual celebration, held on 12 April, of the anniversary of the first human space flight by Yuri Gagarin (USSR). It was proclaimed at the 65th session of the United Nations General Assembly on 7 April 2011, a few days before the 50th anniversary of the flight.

Yuri Gagarin crewed the Vostok 1 mission in 1961, completing one orbit around Earth over 108 minutes in the Vostok 3KA spacecraft, launched on a Vostok-K rocket from Baikonur Cosmodrome in Kazakhstan, USSR.

In the Soviet Union, 12 April was commemorated as Cosmonautics Day since 1963, and is still observed in Russia and some former Soviet states. Yuri's Night, also known as "World Space Party" is an international observance initiated in the United States in 2001, on the 40th anniversary of Gagarin's flight.

Also commemorated on this date is the first Space Shuttle launch, STS-1 of "Columbia" on 12 April 1981, exactly 20 years after the first human spaceflight.
None
annual celebration
UNK
Q7327
Yuri Gagarin
PER
Q15180
USSR
LOC
Q47423
United Nations General Assembly
MEDIA
Q182524
Vostok 1
MISC
Q624038
Vostok 3KA
MISC
Q3303767
Vostok-K
MISC
Q177477
Baikonur Cosmodrome
LOC
Q673442
Cosmonautics Day
TIME
Q302045
former Soviet state
Concept
Q782749
Yuri's Night
TIME
Q30
United States
LOC
Q48806
Space Shuttle
Concept
Q217543
STS-1
MISC
Q54383
Columbia
MISC
Q4288416
International Day of Human Space Flight
Concept
2011-04-07T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
7 April 2011
DATE
1961-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1961
DATE
1963-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1963
DATE
2001-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2001
DATE
1981-04-12T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
12 April 1981
DATE
+12^^http://www.w3.org/2001/XMLSchema#decimal
12
NUMBER
+65^^http://www.w3.org/2001/XMLSchema#decimal
65
NUMBER
+50^^http://www.w3.org/2001/XMLSchema#decimal
50
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
+12^^http://www.w3.org/2001/XMLSchema#decimal
12
NUMBER
+40^^http://www.w3.org/2001/XMLSchema#decimal
40
NUMBER
-1^^http://www.w3.org/2001/XMLSchema#decimal
-1
NUMBER
+20^^http://www.w3.org/2001/XMLSchema#decimal
20
NUMBER
country of citizenship
start time
vehicle
UTC date of spacecraft launch
first flight