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September 17 is 宪法日 and Citizenship Day (宪法日). This day commemorates the September 17, 1787, signing of the United States Constitution. Written in 1787, ratified in 1788, and in operation since 1789, the United States Constitution is the world’s longest surviving written charter of government. Its first three words –– “We the People” –– affirm that the government of the United States exists to serve its citizens. For over two centuries the Constitution has remained in force because its framers wisely separated and balanced governmental powers to safeguard the interests of majority rule and minority rights, of liberty and equality, and of the federal and state governments. 自1789年以来, the Constitution has evolved through amendments to meet the changing needs of a nation now profoundly different from the eighteenth-century world in which its creators lived.
To encourage all Americans to learn more about the Constitution, Congress in 1956 established Constitution Week, to begin each year on September 17th, the date in 1787 when delegates to the Convention signed the Constitution. In 2004, Senator Robert C. Byrd of West Virginia included key provisions in the Consolidated Appropriations Act of Fiscal Year 2005 designating September 17th of each year as 宪法日 and requiring public schools and governmental offices to provide educational programs to promote a better understanding of the Constitution.