In any case since several years ago I have noticed a sort of end of the winter pattern: Eyjafjallajökull (2010), Fukushima (2011), Villarica Chile (2015), Fagradalsfjall (2021), New Zealand earthquakes (2022)... all in March.

And then is a waterfall later travelling towards equator: Volcan de Fuego Guatemala (may 2012). Feels a little like a tennis play with eruption waves bouncing, but maybe I'm just cherry picking facts together.