In Article 18 of the Law on the National Arms, Flag, and Anthem (Ley Sobre El Escudo, la Bandera y el Himno Nacionales) there is a listing of dates that the Mexican flag is flown by all branches of government. Civilians are also encouraged to display the national flag on these days. Many of the dates listed in the law denote significant events and people that shaped of Mexican identity and the course of its History. Some of the holidays and commemorations listed require the flag to be flown at half-staff. The national flag can be flown any day of the year by civilians or at festive occasions in persurrence to Article 15 of the Law on the National Arms, Flag, and Anthem.