February 18 is the 49th day of the year in the Gregorian calendar. It is often associated with various historical events, notable birthdays, and observances. For example, in the United States, it is recognized as National Battery Day, which encourages people to recycle batteries and raise awareness about their environmental impact. Throughout history, several significant events have occurred on this date. In 1930, the planet Pluto was discovered by astronomer Clyde Tombaugh. Additionally, February 18 is the birthday of famous individuals such as John Travolta, an American actor, and Dr. Suess, a beloved children's author.