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 Switzerland so that the ratio of cross to flag width is 5:12. The shade of red used in the flag was not defined by law prior to 2017. The 2017 flag law specifies the colour of the flag as: In 2004, the Federal Chancellery published a corporate design guide for the federal administration, in force since 1 January 2007. The colour specifications given there are compatible with those later put in the annex to the flag law. The matching of heraldic tincture to modern color specifications for print or screen display is very uncertain, and to some extent left to the