Wikipedia:Selected anniversaries/December 7
- 1732 - The Royal Opera House opened at Covent Garden, London.
- 1787 - Delaware became the first state to ratify the United States Constitution.
- 1941 - The Japanese attack on Pearl Harbor provoked the United States to become a combatant in World War II.
- 1965 - Pope Paul VI and Patriarch Athenagoras simultaneously lifted mutual excommunications that had been in place since 1054
- 1972 - Apollo 17, the last Apollo moon mission, was launched.
Recent days: December 6 – December 5 – December 4