Flag of Greece Additionally, the flag may also be flown on days of national mourning, half-mast. The Minister of the Interior has the authority to proclaim flag days if they are not already proclaimed, and proclaiming regional flag days is vested with the elected head of each regional unit (formerly prefectures). Although 17 November is not an official national holiday, Presidential Decree 201/1998 states that respects are to be paid to the flag on that particular day. The War flag (equivalent to regimental colours) of the Army and the Air Force is of square shape, with a white cross on blue background. On
Flag of the Soviet Union statute on the flag was adopted which resulted in a change of the hammer's handle length and the shape of the sickle. A final modification to the flag was adopted in 1980 in which the colour was brightened to a lighter shade of red. The flag continued to be the official national flag until the dissolution of the Soviet Union. Its imagery is now the basis for the flags of many communist parties: a yellow hammer and sickle on a red background. The flag of the Soviet Union consisted of a plain red flag with a gold hammer crossed with