When was the flag officially adopted in the United States?

The United States flag was officially adopted on June 14, 1777, as stipulated by the Flag Act of 1777. This date marks the moment when Congress resolved that the flag of the United States be made of thirteen stripes, alternating red and white, and that the union be thirteen stars, white in a blue field, representing the thirteen original colonies. This act laid the foundational symbolism of the flag and set a precedent for future changes as more states joined the union.

While July 4, 1776, marks the adoption of the Declaration of Independence, it does not pertain to the flag's official status. September 17, 1787, is significant for the signing of the U.S. Constitution, and January 1, 1790, does not hold any specific relevance to the adoption of the flag. Thus, the date of June 14, 1777, is pivotal in the history of the United States flag and its symbolism, representing unity and the values upon which the nation was founded.