Earlier quoted context omitted.
The part of the year where it is cold does not start on the shortest day of the year. There is the part of the year that is cold and there’s the part of the year between the shortest day of the year and the equinox, both are winter. Winter doesn’t mean a lot in mild places where you can wear a tshirt out most days of the year. Where it snows, winter is more or less the time of the year where it snows. People need to…
In a sense, the astronomical definition of winter has a lot more meaning in a connected world. I grew up in a part of Canada where the (colloquial) winter started at the end of October and ended at the end of March. I now live in a part of the country where it starts in late December and runs until the end of April. If you're trying to convey time by saying that something happened last winter, different people are go…
Winter official definition is basically “astronomical Q1” which honestly isn’t all that useful in most cases. (It’s a bit stupid that our months, major holidays, and year almost but not quite align with the astronomical milestones).