Barbara Marks of Ellicott City asks: "Has there ever been a blue moon in February?" Depends on your definition. The modern "blue moon" is the second full moon in any month. But since the lunar cycle takes at least 29.2 days, not even a leap year February has room for two. In 1999, February had no full moon at all. An older definition is the third full moon in a season with four. That occurs in seven out of 19 years, always in February, May, August or November.