no full moon in February. But also 2 in March
That is a bit more rare than a Blue Moon (which happens on average every 3 1/2 years), and a “No-Moon” month happens about once every 19 years. The last time February didn’t have a full Moon was in 1999 and then again in 1980.
https://www.farmersalmanac.com/astronomy/2017/12/28/full-moon-february/
A blue moon is, commonly, the second full moon in a month.
January and March have blue moons...