On the seasons front, traditionally in Ireland winter starts on Halloween (at sunset if you want to be really specific), and so you get winter is November till January, spring is February to April, summer is May to July and autumn is August to October.
That said being an English speaking country and absorbing a lot of media from other English speaking countries, there’s been a slow drift towards the American system making its way in, so younger generations are more likely to use American seasons and older people more likely to use traditional seasons, though you’ll find people of all age groups using either. Certainly they taught the traditional seasons in school when I was a kid, I wonder which they teach now.
(Of course, you could make yet another system based on the weather where summer is approximately two weeks in July, winter is a thing that happens every few years and the rest is a sequence of mild weather with occasional wind and scattered showers)
That said being an English speaking country and absorbing a lot of media from other English speaking countries, there’s been a slow drift towards the American system making its way in, so younger generations are more likely to use American seasons and older people more likely to use traditional seasons, though you’ll find people of all age groups using either. Certainly they taught the traditional seasons in school when I was a kid, I wonder which they teach now.
(Of course, you could make yet another system based on the weather where summer is approximately two weeks in July, winter is a thing that happens every few years and the rest is a sequence of mild weather with occasional wind and scattered showers)