Constitution Day Día de la Constitución: Celebrates the promulgations of the 1857 and 1917 Constitutions (ratified on 5 February 1857 and 5 February 1917 respectively) (See also Patriotic holidays in Mexico). Observance: First Monday of February. March 15-21 (Floating Monday) Benito Juárez's Birthday Natalicio de Benito Juárez
Constitution of 1816 Authorization. In 1811 the Indiana Territory's House of Representatives adopted a memorial to the U.S. Congress asking permission for its citizens "to form a government and constitution and be admitted to the Union", but the War of 1812 delayed the process until 1815.