The most famous anniversary dates in 2011 year:
1) 70th Anniversary of the beggining of the Great Patriotic War - June,22 1941. The date, which opened 5 years of the heaviest tests for many people in the world.
2) 150th Anniversary of serf right abolition in Russia - February,19 1861.
3) 50th Anniversary of the first flight of a man in space - April,12 1961. Yuri Alexeevich Gagarin, the citizen of the Soviet Union accomplished the first flight in space.
4) 15th Anniversary of creation of the first klon in the world - the klon of a sheep Dolly by name in 1996 year. This world-known experiment was made by Ian Wilmut and Keith Campbell in Roslin Institute in Scotland near Edinburgh city.  
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