1. The Attack on Pearl Harbor: December 7, 1941, is a day that will forever live in infamy due to the surprise military strike by the Imperial Japanese Navy on the United States' naval base in Pearl Harbor, Hawaii. The attack resulted in the deaths of 2,403 Americans, and it prompted the United States' entry into World War II. The day after the attack, President Franklin D. Roosevelt famously declared, "Yesterday, December 7th, 1941—a date which will live in infamy—the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan."

2. Assassination of Jose Rizal: December 7, 1896, was a dark day in Philippine history. It was on this day that the Spanish colonial authorities executed national hero Jose Rizal for his role as a key figure in the Philippine Revolution against Spanish rule. Rizal's execution further galvanized the revolutionaries and contributed to the eventual overthrow of Spanish rule in the Philippines.

3. Launch of Ellis Island Website: December 7, 2001, marked the launch of the website for the Ellis Island Immigration Museum in New York City. The website provides access to millions of records documenting the arrival of more than 12 million immigrants to the United States through Ellis Island between 1892 and 1954. The website allows users to search for their ancestors and learn about their journeys to America.

4. First NBA Game at Madison Square Garden: December 7, 1946, was a momentous day in the history of basketball. It was on this day that the New York Knicks played their first game in the newly formed National Basketball Association (NBA) at Madison Square Garden. The Knicks defeated the Toronto Huskies 68-66 in front of a crowd of 18,646 fans.

5. Opening of the New York Stock Exchange: December 7, 1868, marked the opening of the new location of the New York Stock Exchange at 10-12 Broad Street in Manhattan. The exchange had previously been located at various sites throughout the city, including Wall Street. The new location was purpose-built and designed to accommodate the growing number of traders and brokers who were flocking to the exchange. Today, the New York Stock Exchange remains one of the most important financial institutions in the world.