What day of the week was October 4, 1582?

The day of the week October 4th, 1582 fell on was a Monday.

Teresa of Ávila the Spanish nun and saint (b. 1515) died on this day in 1582.

Pope Gregory XIII implements the Gregorian Calendar. In Italy the Poland, Portugal, and Spain, October 4 of this year is followed directly by October 15.