Question: When was the emancipation proclamation signed into law?

Disambiguated questions and answers:
context: On September 22, 1862, Lincoln issued a preliminary warning that he would order the emancipation of all slaves in any state that did not end its rebellion against the Union by January 1, 1863. None of the Confederate states did so, and Lincoln's order was signed and took effect on January 1, 1863. The Emancipation Proclamation outraged white Southerners and their sympathizers, who saw it as the beginning of a race war, like in Haiti. It angered some Northern Democrats, energized abolitionists, and undermined those Europeans that wanted to intervene to help the Confederacy. The Proclamation lifted the spirits of African Americans both free and slave. It led many slaves to escape from their masters and get to Union lines to obtain their freedom, and to join the Union Army.
question: When was Lincoln's preliminary warning related to the emancipation proclamation made?
short_answers: September 22, 1862
wikipage: Emancipation Proclamation
context: On September 22, 1862, Lincoln issued a preliminary warning that he would order the emancipation of all slaves in any state that did not end its rebellion against the Union by January 1, 1863. None of the Confederate states did so, and Lincoln's order was signed and took effect on January 1, 1863. The Emancipation Proclamation outraged white Southerners and their sympathizers, who saw it as the beginning of a race war, like in Haiti. It angered some Northern Democrats, energized abolitionists, and undermined those Europeans that wanted to intervene to help the Confederacy. The Proclamation lifted the spirits of African Americans both free and slave. It led many slaves to escape from their masters and get to Union lines to obtain their freedom, and to join the Union Army.
question: When was the emancipation proclamation signed into law and took effect?
short_answers: January 1, 1863
wikipage: Emancipation Proclamation

Long-form answers:
knowledge: content: On March 24, 1962, King announced that he had been invited by President Kennedy to submit for the President's signature a "second Emancipation Proclamation".[3] King and his legal staff declared that they would have the document ready on May 17, 1962, the eighth anniversary of the decision of Brown v. Board of Education.
wikipage: Second Emancipation Proclamation Drafting
content: Kennedy did not take the opportunity to issue a second Emancipation Proclamation "and noticeably avoided all centennial celebrations of emancipation."[1] In November 1962, Kennedy did issue Executive Order 11063, prohibiting racial discrimination in federally supported housing or "related facilities",[5] and months afterwards introduced an omnibus civil rights bill to Congress after his civil rights address on national television and radio.[1][6] The fulfillment of the vision of King and the Civil Rights Movement against segregation came with the landmark Civil Rights Act of 1964 which was pushed through a bitterly divided Congress and signed by President Lyndon B. Johnson in 1964.
wikipage: Second Emancipation Proclamation Results
content: The Second Emancipation Proclamation is the term applied to an envisioned executive order that Martin Luther King Jr. and other leaders of the Civil Rights Movement enjoined President John F. Kennedy to issue. As the Emancipation Proclamation was an executive order issued by President Abraham Lincoln to free all slaves being held in states at war with the Union, the envisioned "Second Emancipation Proclamation" was to use the powers of the executive office to strike a severe blow to segregation.
wikipage: Second Emancipation Proclamation
long_answer: On September 22, 1862, Lincoln issued a preliminary warning that he would order the emancipation of all slaves in any state that did not end its rebellion against the Union by January 1, 1863. None of the Confederate states did so, and Lincoln's order was signed and took effect on January 1, 1863. On March 24, 1962, King announced that he had been invited by President Kennedy to submit a "second Emancipation Proclamation" for the President's signature, which would use the executive office's powers to strike a severe blow to segregation. However, Kennedy did not issue a second Emancipation Proclamation and instead issued Executive Order 11063, prohibiting racial discrimination in federally supported housing or "related facilities," and months afterward introduced an omnibus civil rights bill to Congress after his civil rights address on national television and radio.