1. Pearl Harbor Attack: On this day in 1941, the Imperial Japanese Navy launched a surprise attack on the United States naval base at Pearl Harbor, Hawaii, killing over 2,400 Americans and leading to the United States’ entry into World War II.

2. Earthquake: In 1987, a magnitude 5.9 earthquake struck the California coast near Cayucos. The quake caused significant damage and power outages in several nearby communities.

3. Disneyland Opening: On December 7, 1995, Disneyland in Anaheim, California opened its newest attraction, the Indiana Jones Adventure. The popular ride is still a mainstay of the park's attractions.

4. Harvesting Grapes: In the Central Valley of California, December marks the end of the harvest season for table grapes. The state is the largest producer of table grapes in the United States, producing over 90% of the nation's supply.

5. Launch of the Mars Pathfinder: On December 7, 1996, NASA launched the Mars Pathfinder spacecraft from Cape Canaveral, Florida. The spacecraft landed on Mars in July 1997 and deployed a rover which became the first vehicle to explore Mars' surface since the Viking missions of the 1970s.