January 30 is the 30th day of the year in the Gregorian calendar. It is often associated with various historical events, including the execution of King Charles I of England in 1649, which marked a significant moment in British history. In modern times, January 30 is recognized as National Croissant Day in the United States, celebrating the popular flaky pastry. It is also a day when many people reflect on the importance of winter activities and the upcoming arrival of spring.