Google Celebrates First Person in Space

Google creates a doodle for to celebrate the first person who traveled to space, Yuri Gagarin. Here some information from Wikipedia:

Hero of the Soviet Union, was a Soviet cosmonaut who in 1961 became the first person in space and the first person to orbit the Earth. ... Yuri's Night is an international celebration held on April 12 every year to commemorate the first human in space and the first space shuttle launch.

Why not first person on Moon? Maybe Google doesn't believe that ever happened. ;)