Flag of Greece background as its official flag. After the Ottoman conquest, however, this symbol also found its way to a "new Constantinople" (or Third Rome), i.e. Moscow. Russia, deeply influenced by the Byzantine Empire, saw herself as its heir and adopted the double-headed eagle as its imperial symbol. It was also adopted by the Serbs, the Montenegrins, the Albanians and a number of Western rulers, most notably in Germany and Austria. Flag of Greece The national flag of Greece, popularly referred to as the "sky-blue - white" or the "blue-white" (), officially recognised by Greece as one of its national symbols, is
Flag of Greece other designs surviving until that time. No other designs and badges can be shown on the flag. To date, no specification of the exact shade of the blue colour of the flag has been issued. Consequently, in practice hues may vary from very light to very dark. The Greek Flag Day is on 27 October. The old land flag is still flown at the Old Parliament building in Athens, site of the National Historical Museum, and can still be seen displayed unofficially by private citizens. The use of the Greek flag is regulated by Law 851. More specifically, the law