On what date was the cosmonaut born that is believed to have landed off-course and been held by the Chinese government?
Lost Cosmonauts:  Another cosmonaut, Vladimir Ilyushin, is believed to have landed off-course and been held by the Chinese government. Vladimir Ilyushin: Major General Vladimir Sergeyevich Ilyushin (Russian: Владимир Серге́евич Ильюшин ) (March 31, 1927, Moscow  – March 1, 2010) was a Soviet general and noted test pilot, and the son of aerospace engineer Sergei Ilyushin.
March 31, 1927