The shopping malls start putting up xmas decorations around the middle of November. 'xmas' or "Xmas" is short for 'Christmas'.
Some people say "Holidays" instead of 'Christmas' if they are not Christian.
This blog is mainly to explain a different English language expression every day. Sometimes I post other stuff. I also have a YouTube channel which is mostly about computer software: https://www.youtube.com/englishspacedog