The dates transform every year, so be sure you check when they're before you make travel programs. If you're able tot avoid a holiday, base on your own in Seoul or Busan for its duration. Lots of companies continue to be open, and also the metropolitan areas is usually surprisingly peaceful with Absolutely everyone outside of casino betting city.
Down load an app like IQAir Air Visible (for iOS or Android) to keep track of existing disorders as well as the future forecast across the country.