How long after the Church was organized was the age of accountability for baptism revealed?
(Answer on page 13)
Here's answer to week's question
(From page 2)
Almost one year to the day after the Church was organized, Joseph Smith learned through revelation that children, when properly taught, are to be baptized when 8 years old. It was first printed in Evening and Morning Star in October 1832.
Source: The Heavens Resound by Milton V. Backman Jr., p. 221.