President of Turkmenistan Serdar Berdimuhamedov sent sincere congratulations and best wishes to Hero of Turkmenistan, instructor-cosmonaut-tester, deputy head of the Cosmonaut Training Centre - commander of the cosmonaut detachment of the federal state budgetary institution «Research and Testing Cosmonaut Training Centre named after Yuri Gagarin» Oleg Kononenko on his birthday. 

Taking this pleasant opportunity, the President of Turkmenistan expressed heartfelt wishes for Oleg Kononenko's good health, longevity, happiness and family well-being, as well as new successes in the work on space exploration.