system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
When is Tax Day not on April 15?


assistant
Income taxes in the United States generally must be filed on or before April 15. But when April 15 falls on a weekend or holiday, the filing deadline is moved to next business day.