Even though a season can seem long or short, each one is 3 months long, according to our calendar. The earth and the sun don't always behave exactly according to human hopes and plans but it generally works to think of each season beginning on the 21st of March, June, September and December. Three months is just about 90 days so half of a season is 45 days. When you add 45 to the first day of a season, you get not the next month but the one after that.
So, winter began on Dec. 21. Add 45 days you get to Feb. 4, today! Today is the mid-day of winter. That means we are passing the mid point and the remaining days in winter are fewer than we have already experienced.
This rough calculation works for any season: beginning month plus 2. The 4th day of that month (May, August, November, February) is the mid day, good or bad, like it or not.
I saw a video on a cold day in February about owl babies. High in a very elevated nest, amid cold steady winds, those babies survive in their little feather suits in very unpleasant and harsh conditions. Still, when it is getting toward spring, life knows what is happening.
Our amaryllis knows: