Is there a month with 2 full moons and if which one?

Yes, there can be a month with two full moons, commonly referred to as a "blue moon." This phenomenon occurs approximately every 2.5 to 3 years due to the lunar cycle, which is about 29.5 days long. The most recent instance of a month having two full moons was in August 2023, when the first full moon occurred on August 1 and the second on August 30.