Baku:Azerbaijan commemorates National Flag Day on November 9, a celebration instituted by a decree from President Ilham Aliyev on November 17, 2009. This day honors the adoption of the Azerbaijani tricolor as the national flag, first introduced on November 9, 1918, during a meeting of the Azerbaijan Democratic Republic's government, which lasted until May 1920.

According to Trend News Agency, after Azerbaijan regained independence in 1991, the Supreme Soviet reinstated the tricolor, featuring an eight-pointed star and crescent, as the State Flag of the Republic of Azerbaijan on February 5. In 2009, an amendment to Article 105 of the Labor Code designated November 9 as National Flag Day, making it a non-working holiday.

The "State Flag of the Republic of Azerbaijan" law offers a detailed description of the flag, which symbolizes the country's sovereignty. It consists of three horizontal stripes of equal width blue on top, red in the middle, and green at the bottom. A white crescent and an eight-pointed star are prominently displayed in the center of the red stripe on both sides.

On September 1, 2010, President Ilham Aliyev inaugurated the National Flag Square in Baku, following a decree signed on November 17, 2007. The flag displayed at the square weighs over 500 kilograms, with dimensions of 36 meters in width and 72 meters in length, ranking it among the largest in the world. To further celebrate the national emblem's significance, President Aliyev initiated the establishment of a Museum of the State Flag at the square.