1. The Great White Hurricane: On December 6, 1888, a massive blizzard, known as the Great White Hurricane, struck New York City and the eastern seaboard. The storm set records for snowfall and winds, with drifts up to 50 feet high and winds reaching up to 80 miles per hour. The storm caused widespread damage and numerous deaths.

2. New York City Subway: On December 6, 1904, the first underground line of the New York City subway opened, running between City Hall and Harlem. The subway transformed transportation in the city and became a model for urban transit systems around the world.

3. Women's Suffrage Victory: On December 6, 1917, New York State became the first state east of the Mississippi River to grant women the right to vote. The victory was a major milestone in the national struggle for women's suffrage, and helped pave the way for the passage of the 19th Amendment to the U.S. Constitution in 1920.

4. John Lennon's Death: On December 8, 1980, former Beatle John Lennon was assassinated outside his apartment building in New York City. However, local landmarks such as Strawberry Fields, in Central Park, still remain as symbolic memorials of his life.

5. World Trade Center Bombing: On February 26, 1993, a bomb exploded in the underground garage of the World Trade Center, killing six people and injuring more than 1,000. The attack was the first terrorist strike against the World Trade Center and set the stage for the September 11 attacks on the same site eight years later.