As reported by Censor.NET, the head of state posted the congratulations on his Facebook page.
"Blue and yellow colors and chevrons became symbols of our defenders' courage. I wish you a happy National Flag Day!" he wrote.
Then-President of Ukraine Leonid Kuchma instituted Aug. 23 as the Day of the Ukrainian National Flag by his decree in 2004. President Viktor Yushchenko amended the decree in 2009 by establishing the official annual flag-raising ceremony throughout Ukraine Aug. 23.