Just to be pedantic, as I found it really interesting when I realised, it’s actually 5 months winter time and 7 months summer.

This is a great point and something I don’t think many people are aware of. I believe I’ve heard a stat that states that only 50% the impact of planes on climate change is due to burning fossil fuels, whilst the other 50% is due to cloud seeding. (Source: https://www.bbc.com/future/article/20210525-how-aviation-is-reducing-its-climate-emissions).