Complex sentence: There are calligraphy museums in the world, i.e. in Turkey, China, Japan and UAE, but only on August 14,2008 Russia joined the world calligraphy museums society.
Split into simpler sentences: There are calligraphy museums in the world, i.e. in Turkey, China, Japan and UAE, bur it was the first experience for Russia. On August 14,2008 Russia joined the world calligraphy museums society.