Flag of the Greek Orthodox Church Flag of the Greek Orthodox Church The Ecumenical Patriarchate and Mount Athos, and also the Greek Orthodox Churches in the diaspora under the Patriarchate use a black double-headed eagle in a yellow field as their flag or emblem. The eagle is depicted as clutching a sceptre and an orb with a crown above and between its two heads. An earlier variant of the flag, used in the 1980s, combined the double-headed eagle design with the blue-and-white stripes of the flag of Greece. The design is sometimes dubbed the "Byzantine imperial flag", and is considered—inaccurately—to have been the actual historical banner
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