Gravity Probe B PNG Images (3)
Gravity Probe B PNG Images (3)
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Find the most up-to-date design of transparent images, signs and symbols
International Dance Day is an annual celebration that takes place on April 29th. It was created by the International Dance Council (CID) in 1982 to promote dance as an art form and to increase its recognition and appreciation around the world.
World Book and Copyright Day is an annual event celebrated on April 23rd to promote reading, publishing, and the protection of intellectual property through copyright.
World Penguin Day is celebrated every year on April 25th to raise awareness about the plight of these fascinating flightless birds and the importance of their conservation.
Lighthouse Day is a day dedicated to recognizing the vital role lighthouses played in maritime navigation throughout history.
