Have they ever had it any other way ? Will the world end on the 21st, probably not.
Yes,we grow up with Christmas coinciding with the beginning of Summer,so we are used to it - as odd as I know that seems to those in the Northern Hemisphere.
No.Where I live,weather can sometimes be cool around Christmas - but not that cool!
...ah we're pretty used to it, its the same every year you know
yes if they have a summer solstice version of the american and celtic winter solstice