Read the following passage and answer if the question is true or false.
Passage: A blue moon is an additional full moon that appears in a subdivision of a year: either the third of four full moons in a season, or a second full moon in a month of the common calendar.

Question: can there be two full moons in one month?

Is the answer True or False? Respond with only "True" or "False" and no additional text.
True
True.