Question: what is the first day of january 2019?
Answer: January 1st, 2019 is a Tuesday. It is the 1st day of the year, and in the 1st week of the year (assuming each week starts on a Monday), or the 1st quarter of the year. There are 31 days in this month. 2019 is not a leap year, so there are 365 days in this year.