Well if it's on the internet it must be true, Right?
In the Americas at least, 2018 features an unusual sequence of full moon dates: January 1, January 31, March 1, and March 31. There are two full moons in January, none in February, and two full moons again in March. This isn’t a unique occurrence. It happened in 1999 and will happen again in 2037, at intervals of 19 years, an interval called the Metonic cycle by astronomers.
There’s no scientific significance to having two full moons in a month or a February with no full moons. It is simply a quirk of our calendar.
The average time between two full moons is about 29 1/2 days. Most months of the calendar are longer (30 or 31 days) and February is shorter (28 days, 29 in leap years). Therefore, it’s possible, from time to time, for any one of 11 months to contain two full moons … but not February. In fact,
February can have no full moons, as in 2018. And when this happens, both January and March will have two full moons each. Nowadays, the second full moon of a month is called a Blue Moonhttps://earthsky.org/astronomy-essentials/why-no-full-moon-in-february-2018
