January 12 is the 12th day of the year in the Gregorian calendar. It is often associated with various historical events and celebrations. For example, it marks the birthday of notable figures such as Jack London, an American author known for his adventure novels. In addition to historical significance, January 12 is recognized as National Pharmacist Day in the United States, honoring the contributions of pharmacists to healthcare. It is also a time when many people reflect on their New Year's resolutions as they settle into the new year.