How long does it take for Ramadhan to move from one season into the next?

Assalamualaikum and Hello to all, As a muslim experiencing Ramadhan in Europe, presently in summers, with it's long hours, has led me to think about when I experienced it in winters here when I was a child. Specifically, I was wondering how long does it take for Ramadhan to move from one season into the next? How long will it be before I experience Ramadhan in winter, after experiencing in summer for some years now? I will offer some thoughts as an answer, but I'd be grateful for any further thoughts. Wassalam and best regards.